Transform the following sentence from the active voice to the passive voice: They will announce the results tomorrow.

Over-exercise took a toll on his health.

“The sun set, and the stars appeared, while we sat by the fire.” is a complex-compound sentence.

It contains:

1. Two independent clauses (can stand alone as sentences):
   • The sun set.
   • The stars appeared.
2. One dependent (subordinate) clause:
   • while we sat by the fire
     (This clause cannot stand alone because it begins with the subordinating conjunction while.)

Structure

• Independent clause + and + Independent clause + Dependent clause

Therefore, the sentence is a compound-complex sentence (also called a complex-compound sentence).

"Hit the nail on the head" means to describe or identify something exactly and correctly.

"Burning the midnight oil" means working late into the night or studying/work hard at night.