Johnny, you _________play with the knife, you_________ hurt yourself.
| A．won’t; can’t | B．mustn’t; may | C．shouldn’t; must | D．can’t; shouldn’t |
What’s wrong with him? I haven’t seen him _____ last Wednesday.
A. on B. since C. by
China has been successful _____ the WTO.
A. to enter B. in enter C. in entering
Did you know _____?
A. how much did the bike cost
B. where he lives
C.if he bought a camera yesterday
Look! There is a pet dog____on the ground.Let’s go and play with it.
A. lie B. lay C. lying
I don’t know _____
A. where does he come from
B. what is his name
C. how old he is