When you see some waste paper on the ground, you should _______ and put it in the trash bin.

Danny is walking. He is __________ his way __________ home.[ ]

____ weekends, Sally often goes to movies ____ her friends. [ ]

Teenagers _______ allowed to drive in the street ．

Excuse me, could you please tell me if the match will be held on time? —It depends on the weather. If it rains tomorrow, we’ll have to ______ it ______.