He suddenly fell ill, ______ prevented him from attending his friend’s wedding.
| A．why | B．what | C．that | D．which |
Sichuan province ______by the earthquake，causing difficulties to the post-festival road transport.
| A．were affected | B．was affected | C．had effected | D．has affected |
The government declared the ban____ everyone must go to the front.
| A．which | B．that | C．不填 | D．what |
He _____what I said.
| A．doesn’t agree on | B．disagrees with | C．disagrees to | D． agrees on |
Bob _____a series of brutal murders.
A. committed C. crimed C. commited D. did the wrong
Costs have been reduced ___20% over past year.
| A．in | B．on | C．to | D．by |