— Look! It _______ be Tom in the classroom.
— It ________ be him. Because I saw him in the teachers’ office just now.
A. may， mustn’t B. must， can’t
C. can， can’t D. mustn’t， can
— Your parents aren’t at home， are they?
— No. They ________ to Shanghai on a business trip.
A. go B. will go C. have gone D. have been
— What’s wrong with you， Jane? You look tired
—I_______ to watch my favorite TV program last night.
A. stayed up B. put up
C. turned up D. picked up
— I won’t get good grades ________ I work hard.
—That’s _______ everyone is trying their best to achieve their dreams.
A. until， why B. unless， why
C. if， because D. since， when
The old man often feels _________ because his children live far away.
A. hungry B. crazy C. sleepy D. lonely
When I got into the room， my mother was talking _______the phone
A. to B. with C. about D. on
