—Who’s that boy reading in the study ? Is it David?
—It __________ be David. I saw him go home just now.
| A．must | B．can’t | C．may | D．shouldn’t |
--Why don’t you listen to the radio？
-- ________
A．That’s all right． B．You’re welcome． C．That’s a good idea．
Don’t forget ________ the letter to your friend．
A．send B．sent C．to send
You look tired．Why not stop ________ and have a rest？
A．to work B．worked C．working
How about ________ a newspaper in English？
A．read B．reading C．see
Lingling，please ________ translate the sentence into Chinese．
A．try to B．tries to C．tried