—Talking loudly in a library is impolite.—In fact, we should also take care not to cough or sneeze loudly in public.
The match will start ______ midnight.
—______ does he want so much money? — Because he wants to buy a new camera.
He often ______ basketball, but seldom ______ volleyball.
There ______ a dog and two cats in the picture.
_____ your sister good at _______?