John was a student at this university from 1999 to 2003, ________ he studied hard and was made chairman of the Students’ Union.
| A．during which | B．by which | C．during which time | D．by which time |
Did ______ on time make the teacher angry ?
| A．she not come | B．she not to come |
| C．not her coming | D．her not coming |
You can hardly imagine the difficulty the woman had ______ her children．
| A．brought up | B．to bring up |
| C．bringing up | D．to have brought up |
Only one of the places is ________
| A．worth to visit | B．worth visiting |
| C．worth of visiting | D．worth being visited |
-- Has Mr. White arrived?
-- Yes, already, _______ he wait outside or just come in?
| A．Shall | B．May | C．Could | D．Must |
China’s New Food Act provides for a food recall systemto producers have to stop productiontheir food isn’t up to standards.
| A．that; if | B．where; if | C．which; when | D．when; where |