.Our boss suggested we clerks ______ good sales methods and his words suggested that ______ did the best ______ the best prize.

The work is too hard for him. He__________ finish it on time.

Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?

Listen! There is a knock on the door．Who _____ it be?—It must be Jack．Just now I sent for him．

______ does he exercise? —Once a week.[ ]