The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.
| A．to planting | B．to plant | C．plant | D．planting |
— Is John coming by train ?
— He should, but he ______ not. He likes driving his car.
| A．must | B．can | C．need | D．may |
—We need a person badly to think up such an idea .
—_________the new comer have a try ?
| A．Shall | B．May | C．Should | D．Need |
—Dad, would you buy me an MP3 player if I do well in the final exam?
—I _________, I promise.
| A．would | B．shall | C．should | D．will |
–I’m sorry but I must be going off now. --Ok, __________.
| A．So long | B．Walk slowly | C．Be careful | D．Take your time |
Can you think of some cases ___ drivers obviously knew the traffic rules but didn’t obey them?
| A．why | B．where | C．as | D．which |