— Did you go to the lecture by the visiting professor?
— No. I ______ it, but I've been busy taking care of my grandma in hospital these days.
| A．would have attended | B．should attend |
| C．must have attended | D．would attend |
While _________ in Britain, he made friends with the natives there.
| A．working | B．worked |
| C．he works | D．he is working |
David said that it was______ his strong interest in literature_____ he chose the course.
| A．because of; that | B．because; so |
| C．because; that | D．why; because |
The number of the people invited to the meeting ____ about 100, but a number of them ____ late because of the heavy snow.
| A．were; was | B．were; were |
| C．was; were | D．was; was |
What great trouble we had _______ where his house was.
| A．finding | B．to find |
| C．find | D．found |
Having retired(退休), he ______ the club for old men and plays chess every day there.
| A．takes part in | B．joins in |
| C．attends | D．joins |