A foreign language like English is difficult to learn, so you ____________ work too hard.
| A．can’t | B．must | C．shouldn’t | D．ought to |
____ the flight to New York will be delayed is _____ I’m especially worried about．
| A．When; what | B．Whether; that |
| C．When; that | D．Whether; what |
---Have you finished your composition already, Jack?
---Yes, I ____ it within half an hour．
| A．have finished | B．finish |
| C．finished | D．had finished |
---Can you tell me Sam’s telephone number?
---_________．Who is Sam? The newcomer?
| A．I think so | B．That’s OK |
| C．I’d rather not | D．I’m afraid not |
The three teams _____ different ways to solve the problem and they all succeeded at last．
| A．adopted | B．admired |
| C．adapted | D．Addicted |
The band was very successful in the seventies, most of _____ members were in their twenties．
| A．its | B．whose | C．whom | D．Which |