.When _____ if he had seen her, Mattew just shook his head.
| A．asking | B．asked | C．being asked | D．being asking |
. I never go past that house _______ think of the happy life we had in the old days.
| A．where | B．and | C．that | D．but |
If you want to see the chairman of the department, you’d better make an _______ with his secretary first.
| A．admission | B．agreement | C．appointment | D．assumption |
In the poor parts of America's big cities there is a lot of crime, _____ .
| A．and many more is serious | B．much of it is serious |
| C．and much of it is serious | D．more of it is serious |
---Where did you find your deskmate Tom?
--- It is in the library _______ he studied.
| A．that | B．where | C．which | D．if |
_______ originally as the biggest defense work in ancient China, the Great Wall today has become one of the must–see places for visiting foreign leaders to the country in the past six decades. Obama is the fifth US president _______ the man-made wonder.
| A．Having been built; visiting | B．Being built; visited |
| C．To build; having visited | D．Built; to visit |