The environment is becoming worse and worse. I think we should do something to ____ people ____ cutting the trees in order to protect the earth.

Can you tell me _________ ? —-They cost 200 yuan.

They left the twon on the morning _____June 22nd. [ ]

It was with great courage ______ the boy told the truth _______ he had stolen the money.

Must I come here at eight o’clock?-No, you ____. You may come a little later.