He_________ to paint the whole house but finished only the front .
| A．set about | B．set off | C．set out | D．set in |
"We must keep a secret of the things _______ here", the general said, _______ at the man in charge of the information office.
| A．discussed, stared seriously | B．being discussed, seriously staring |
| C．to be discussed, seriously stared | D．discussed, stared |
.China is one of the largest countries in the world, _______ 9.6 million square (平方) kilometers.
| A．to cover | B．covered | C．covers | D．covering |
We advised them to take a rest, but they insisted _______ the work.
| A．finish | B．to finish | C．in finishing | D．on finishing |
I delayed _______ your letter because I had been away for a week.
| A．answer | B．answering | C．writing | D．to post |
.If he succeeded _______ a job, his children wouldn't be suffering from hunger now.
| A．to find | B．to look for | C．in finding | D．in looking for |