Mr Smith is a boss, _____ factory my uncle is working.
| A．in whom | B．whose |
| C．in whose | D．of whose |
—How did he get my telephone number?
—You ________ it . You told him last week．
| A．should have forgotten | B．may have forgotten |
| C．must have forgotten | D．could have forgotten |
When I got back home, I saw a message pinned to the door“ Sorry to miss you, I will call later.”
| A．read | B．reads | C．to read | D．reading |
Present at the meeting ．
| A．Mr. Liu was, who taught us English |
| B．was Mr. Liu, who taught us English |
| C．was who taught us English, Mr. Liu |
| D．Mr. Liu, who taught us English, was |
Scientists are convinced _____ the positive effect of laughter _____ physical and mental health．
| A．of; on | B．by; in | C．of; at | D．on; at |
What would have happened, as far as the river bank?
| A．Bob had walked farther | B．if Bob should walk farther |
| C．if Bob walked farther | D．had Bob walked farther |