There are a lot of flowers on sides of the street.
Miltie________a picture when Mr.Green came in.
—Always look around________you cross the street,David. —OK.I know,Mum. A.until B.before C.unless
The thieves ran away at once when the burglar alarm(防盗报警器)________.
—Did you see Mr Smith when you were in France? —No.When I________France,he________to China.
He told us that he________the letters in the morning.