It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal．
| A．which makes; studying | B．when made; to study |
| C．that made; to study | D．which is made; studying |
If it is convenient ____you , I want to ask you to help me repair the roof of the kitchen. on Friday .
A. to B. for C. with D at
__________ there was danger ahead, the girl walked on.
| A．Known not | B．Not known | C．Knowing not | D．Not knowing |
The population of China is _______ than that of America.
| A．larger fives times | B．five times larger | C．five times as | D．as five times. |
_________ it is to have a picnic !
| A．What a fun | B．How fun | C．What fun | D．How a fun |
Mr. Smith was _______ of the _________ speech.
| A．tired; boring | B．tiring; bored | C．tired; bored | D．tiring; boring |