—Whose shirt is this?—It ______ be Li Lei’s. It is too big for him.

— What’s the matter?—I have a stomachache. You ______eat so much next time..

 -- Are these _______ all from No. 2 Middle School? -- Yes. They often _________ their free time to help the old here.

. - The speaker is a tall man with glasses. - Then it_____ be Mr. Smith, who is short and thin.

-______ I do the laundry first?-No,you _____. You can do your homework first.