—_____ do you usually come to school?—By bike.
—Hi,Jack!How’s it going?—________.We are having a great time in the water park.
Excuse me,sorry to trouble you.Can you please take a photo ________ us?
A group of people ________ playing basketball there.
Some of the water in the rivers ________ not clean.
—________ weather it is!We can’t go boating on the Xuanwu Lake.—Don’t worry.Let’s go to the Science Museum instead.