Cosmonaut goes with astronaut.

Explanation: A cosmonaut is a term used for a person trained for space travel and exploration, particularly in the context of the Russian or former Soviet space program. An astronaut is the term used in the United States and some other countries for a person trained for space travel. Both cosmonaut and astronaut refer to individuals who venture into space.

The correct answer is: commiserate

Connive: To secretly plot or cooperate for a deceitful purpose. Not suitable as it implies involvement in the characters' misfortunes.

Ridicule: To mock or make fun of someone or something. Inappropriate as the author likely wants readers to empathize with the characters, not mock them.

Commiserate: To express sympathy or pity for someone experiencing hardship. This aligns with the idea that the author wants readers to empathize with the tragic characters.

Contemplate: To think deeply or consider carefully. While contemplating may be part of the reading experience, it doesn't capture the emotional connection or invitation to empathize conveyed by the author.

The incorrect sentence is: "We reached at home yesterday."

The correct version would be: "We reached home yesterday."

Explanation: The sentence "We reached at home yesterday" contains an error in the use of the preposition "at." In English, when indicating the destination, we typically use the preposition "to" or simply mention the destination without a preposition.

The corrected version is: "We reached home yesterday."

In this corrected sentence, "home" serves as the destination, and no preposition is needed after the verb "reached." It is a common usage to say "reach home" or "arrive home" without adding a preposition like "at" in this context.

N.B. (Nota Bene):

Meaning: "Note well" or "Pay attention to this."

Usage: Used to highlight a specific point or instruction that requires special attention.

Example: The event starts at 7:00 PM, N.B., there will be no entry after 8:00 PM.

In this example, "N.B." directs attention to the important detail that no entry will be allowed after 8:00 PM.

e.g. (Exempli gratia):

Meaning: "For example."

Usage: Used to introduce one or more examples that illustrate the preceding statement.

Example: There are many outdoor activities available, e.g., hiking, biking, and swimming.

In this example, "e.g." introduces specific examples of outdoor activities, indicating that there are more possibilities beyond those mentioned.

When used together in a sentence like "N.B., i.e., e.g.," it suggests that the reader should take note of a specific point (N.B.), and then further details or clarification (i.e.) and examples (e.g.) will be provided.

a) for

The sentence would be: "We haven't been to Cox's Bazar for almost ten years."

Explanation:

When expressing a duration of time without specifying a starting point, "for" is the appropriate preposition. In this case, it conveys that it has been almost ten years since the last visit to Cox's Bazar.

The correct answer is:

b) will

Explanation:

The sentence is a first conditional, where the "if" clause is in the simple present tense ("If I meet him"), and the main clause is in the future tense ("will give him your message"). First conditionals express a real or likely situation in the future based on a specific condition in the present.

The correct answer is:

d) media

Explanation:

• "Datum" is the singular form of "data."
• "Radius" is the singular form of "radii."
• "Analysis" is the singular form, and its plural form is "analyses."
• "Media" is the plural form of "medium."

So, among the options provided, "media" is in plural form.

d) under

The complete sentence would be: "The area is under close circuit television survey."

Explanation: In this context, "under" is used to convey that the area is subjected to or covered by close circuit television survey.

The correct answer is:

c) has been invented

The complete sentence is: "A new medicine has been invented to combat asthma in small children."

Explanation:

The sentence is describing the creation of a new medicine, and it is appropriate to use the present perfect tense "has been invented" to convey that the invention has occurred recently and has relevance to the present.