31. They demanded that the books __to the school library at once.
| A．return | B．should return | C．be returned | D．would be returned |
----How about six o’clock outside the park?
---That____me fine.
| A．fits | B．meets | C．satisfies | D．suits |
All our officers are trained to____themselves against knife attacks.
| A．defend | B．prevent | C．preserve | D．struggle |
It is____to have some cold drinks on a hot summer day.
| A．a fun | B．fun | C．of fun | D．funny |
Police______the disappearance of two children.
| A．are looking into | B．is looking into | C．are looking for | D．is looking at |
________ , the idea of having to work under a woman defeated him.
| A．Wanting the job very much |
B．Although wanting the job badly |
C．Though he wanted the job very much |
| D．He wanted the job badly |