Mark was a student at this university from 1999 to 2003, _______he studied very hard and was made Chairman of the Students’ Union.
| A．during which time | B．for which time |
| C．during whose time | D．by that time |
. Tom kept quiet about the accident_______ lose his job.
| A．so not as to | B．so as not to | C．so as to not | D．not so as to |
Johnson suggested the problem worth paying attention _____ at the meeting.
| A．to be discussed | B．to been discussed | C．being discussed | D．should be discussed |
. Leo ______ have kept his promise. I wonder why he changed.
| A．must | B．should | C．need | D．would |
______was known to all, he had broken his promise ____he would give us a rise.
| A．As; which | B．As; that | C．It; that | D．It ; which |
Washington, a state in the United States, was named _______one of the greatest American presidents.
| A．in honor of | B．by means of | C．in search of | D．in need of |