These old pictures bring to their mind the college days ________ they spent together, ________ life was hard but happy.
| A．when; whose | B．which; whose |
| C．which; when | D．when; which |
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 |
Rather than on a crowded bus, he always prefers a bicycle．
| A．ride; ride | B．riding; ride | C．ride; to ride | D．to ride; riding |
—Remember the first time we met?
—Sure．You__________ the novel Pride and Prejudice in the library．
| A．had borrowed | B．have borrowed | C．were borrowing | D．borrowed |