Do you know the man _______Tom is a bus driver?Yes, he is my friend.
Students must be strict _________ their studies and teachers should be strict ________ their students.
At last, Tom made the baby ________ and began to laugh.
Do you think _________ should be allowed to drive?
Tom, your hair is too long. Would you please get your hair _______.
-I think teenagers should not be allowed to get car licenses.-I agree. They are not _______.