31. The chair looks rather hard，but in fact it is very comfortable to________.
| A．sit | B．sit on | C．be sat | D．be sat on |
You can not _____him _____a selfish man though he looks cold.
| A．consider; be | B．look on; to be | C．think of; with | D．consider; \ |
My sister ____a good chance to go abroad for further study of English.
| A．was provided | B．was presented | C．was supplied | D． was offered |
Since then the number of people taking driving lessons ____20.
| A．has increased to | B．increases by | C．has increased by | D．have increased by |
The patient was ___of losing his life and had to be operated on at once.
| A．in danger | B．in the danger | C．out of danger | D．out of the danger |
It was _____that we went camping on the mountain.
| A．such nice weather | B．so nice a weather | C．such a nice weather | D．too nice weather |