The problem had become _____ in his mind, and he could not decide what to do about it.
| A．simplified | B．exaggerated | C．matured | D．isolated |
It didn’t take the children long to________ the correct answer．
| A．carry out | B．figure out |
| C．turn out | D．give out |
_____ herself to science, the great scientist took little notice _____ the honors given to her．
| A．Devoted, of | B．Devoting, of |
| C．Devoted, about | D．Devoting, about |
The old couple, ____had been admitted to university, were living a hard life．
| A．both their children | B．both of whom children |
| C．both of whose children | D．whose their children |
---Has Peter handed in his paper yet?
---I’m not sure．He _______ on it last week．
| A．was working | B．has worked |
| C．worked | D．had worked |
The biggest problem for most plants, which ______ just get up and run away when threatened, i
s that animals like to eat them．
| A．can’t | B．shan’t |
| C．needn’t | D．mustn’t |