The students took the trouble _____ all the ______ leaves away.
| A．to clean, fallen | B．to clean, falling | C．cleaning, falling | D．cleaning, fallen |
You’ll never guess who I met today — my old teacher！ We _____ for 20 years.
| A．don’t meet | B．haven’t met |
| C．hadn’t met | D．couldn’t meet |
. Eat ______ cake you like and leave the others for ______ comes in late.
| A．any, who | B．every, whoever |
| C．whichever, whoever | D．either, whoever |
. I _____ your last point — could you say it again？
| A．didn’t quite catch | B．don’t quite catch |
| C．hadn’t quite catch | D．can’t quite catch |
_______ she was invited to the ball made her very happy.
| A．What | B．That |
| C．When | D．Because |
They won’t buy any new clothes because they _____ money to buy a new car.
| A．save | B．were saving |
| C．have saved | D．are saving |