You ______ wash your hands before meals. It is good for your health. A. may B. can C. must
______ ways to get on well with your classmates, or you will make yourself very lonely.
Oh, dear! There isn’t enough _____ for us in the lift. Let’s wait for the next.
I first met Lisa three years ago. She ________ at a radio shop at the time.
. As a volunteer, he often goes to the hospital to ________ the sick.
_______ of the students will take part in the sports meeting.