---- Look! A man is cutting a tree on the moon.----It ______ be true. The teacher said there is no air on the moon.
I __ interested in the history of China.
—What time did you get there this morning? — _______ eight.
The policeman asked us _____him send the old man to the hospital.
Mr Black ________ the flowers yesterday.
Wangfujing Street is one of __ streets in Beijing .Let’s go there for a shopping trip.