Test Mode Reading Mode Right = 0 Wrong = 0

D ইউনিট : ২০১৩-২০১৪ || চট্টগ্রাম বিশ্ববিদ্যালয় || 2013

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. to adjust the volume, and turning the set on and off
. to adjust the volume, and to turn the set on and off
. adjusting the volume, and to turn the set on and off
. adjusting the volume, and turning the set on and off
making a sound like a cat
calling out to a cat
a loud whistle or a cry of disapproval
a cat's meow
who is he
who was he
who has he been
who he is
He quickly did it
He did it quickly.
He quickly didn't do it
He didn't do it quickly.
He has been building this house for one year.
He has built this house
He builds strong houses
He'll build a house next year