For a long time, they walked without saying _________ word. Jim was the first to break ________ silence.
| A．the; a | B．a; the | C．a; 不填 | D．the; 不填 |
We mustn’t waste anything; ______, we mustn’t waste our time.
| A．after all | B．in all | C．above all | D．at all |
A lesson from the terrible drought(干旱) that hit some parts of southwestern China this year is that more anti-drought projects ______ built in the past years.
| A．should be | B．should not have been |
| C．ought to have been | D．must be |
—Where did you get this book?
—Oh, I ______ it in the bookshop when I was looking for another one.
| A．came across | B．found out | C．looked for | D．came up |
The plane of the Polish president was about to land ______ it snagged(挂) treetops and crashed, ______ the president and 96 others on board.
| A．while, killed | B．when, killing |
| C．and, and killed | D．when, to kill |
Mum ______ to us. “Be quiet! Your little sister is sleeping.”
| A．shouted | B．explained | C．whispered | D．replied |