When you see some waste paper on the ground, you should _______ and put it in the trash bin.
Tom’s mother is angry _____ him because he failed in the exam.[ ]
It is time _____ class now.[ ]
I usually get home late because there is ______ traffic on the road.
Can you tell us what to do next, Miss White?— Please turn to Page _____ and look at the _____ picture.