The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them.
| A．shan’t | B．can’t |
| C．needn’t | D．mustn’t |
We last night , but we went to the concert instead .
| A．must have studied | B．should have studied |
| C．could have studied | D．studied |
I’m sure that your letter will get attention . They know you’re waiting for the reply .
| A．continued | B．immediate | C．careful | D．general |
The house rent is expensive , I’ve got about half the space I had at home and I’m paying
here .
| A．as three times much | B．as much three times |
| C．much as three times | D．three times as much |
I have always been honest and straightforward , and it doesn’t matter I’m talking to .
| A．who is it | B．who it is | C．it is who | D． it is whom |
With more forests being destroyed , huge quantities of good earth each year .
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |