In order to make our city green, _________.
| A．it is necessary to have planted many trees | B．many more trees need to plant |
| C．we must plant more trees | D．our city needs more trees |
The Science Museurn，we visited during a recent trip to Britain，is one of London’s tourist attractions．
| A．what | B．which | C．that | D．where |
一I’m sure Andrew will win the first prize in the final．
一I think so．Hefor it for months．
| A．is preparing | B．was preparing |
| C．has been preparing | D．had been preparing |
Julie is one of the women who always___the latest fashions.
| A．make up for | B．get along with | C．keep up with | D．put up with |
一Why didn’t you try your best to get on the bus?
一I tried to，but I could，it started moving．
| A．when | B．after | C．until | D．before |
Their answers are exactly the same — one of them ______ from the other.
| A．must copy | B．must have copied |
| C．should copy | D．should have copied |