She wrote a month ago, ______ we’ve heard nothing.
| A．since when | B．before which | C．since that | D．after which |
After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees_____ shade and______ down to have a rest.
| A．provided; sit | B．providing; sitting |
| C．providing; sat | D．provided; sat |
The classroom is crowded with children_____ have poor eyesight, all of ____ interested in painting.
| A．who; whom | B．that; whom | C．who; them | D．that; who |
Sorry, I have no time left now. Can we discuss the matter ________ supper?
| A．over | B．on | C．by | D．at |
In _______ face of more and more dropout factories, many people prefer to be paid on _____ daily basis.
| A．the; the | B．a; 不填 | C．the; a | D．the; 不填 |
The manager needs an assistant that he can _____ to take care of problems in his absence.
| A．count on | B．count in | C．count up | D．count out |