—How long________the film________?—For about ten minutes.
According to_____WHO, all big cities need health care plans to prevent_____spread of AIDS.
Xuzhou is a place with many forests. It is reported that nearly one-third of its land _________ covered with forests.
—Can you understand what I said, Ben?—No problem. I can ___________ follow you.
—What do you think of her teaching?—Great! No one teaches ____________in our school.
It’s dangerous __________ with the wild animal.