—Was it in April, 1970 China succeeded sending its first satellite into space?
—Yes, that’s right.
| A．when; in | B．that; on | C．which; on | D．that; in |
The reason why I was late was that I was ______ by the traffic jam.
| A．made up | B．held up | C．turned up | D．put up |
None of us expected that the chairman ______ at the party. We thought he was still in hospital.
| A．made up | B．held up | C．turned up | D．put up |
The teacher simplified the reading materials, ______ it easy for the students to read.
| A．making | B．having made | C．to make | D．made |
The British team, ______ several attempts to climb Yulong Xueshan, decided to have another try this summer.
| A．making | B．having made | C．to make | D．made |
—You didn’t wait for Mr. Smith last night, did you?
—No, but we ______. He didn’t return home at all.
| A．needn’t have waited |
| B．couldn’t have waited |
| C．didn’t need to |
| D．should wait |