— Mum, would you please buy me an MP5 player?— If you can help do some housework the whole vacation，you ____ have one as a reward.

—David，is that man your Chinese teacher?—It___________ be him．He’s having a meeting． 

—Oh, my God！Our teacher is so mean!—Calm down, my friend.Even though she is tough  sometimes, she ________ be nice if you really work hard.

 ---The book _____ be Tom’s.---No, it _____ be his. There’s a name on the book. It’s Jim’s.

--Must we stay in the classroom and finish all the homework?--No, you______. You can take it home.