The phone had been ringing for three minutes before it .
| A．answered |
| B．had answered |
| C．was answering |
| D．was answered |
I was really too busy with my homework and I couldn’t help ____ the housework.
| A．doing | B．do | C．did | D．done |
---How about camping this weekend, just for a change?
---OK, ____you want.
| A．whichever | B．however | C．whatever | D．whoever |
.It is widely accepted that young babies learn to do things because certain acts lead to ______.
rewards B.prizes C.awards D.results
Li Ming won the first prize in the speech contest and I’m glad that his efforts at last _____.
paid off B. worked out C. got back D. turned out
You had better take something to read when you go to see the doctor____ you have to wait.
| A．even if | B．as if | C．in order that | D．in case |