It was not until all the fish in the pond died that________ the situation was serious.
| A．did he realize | B．he realized |
| C．he had realized | D．had he realized |
相关试题
Low-carbon lifestyle is of great benefit to improve the world environment．_________can be
enjoyed from it until you have a deep understanding of it，however．
| A．Something | B．Nothing | C．Few | D．Much |
—Jack isn't a football coach, is he?
—_________.
| A．No, but he was. | B．Yes, he isn't |
| C．Yes, he wasn't | D．No, he is |
The two young men were having a heated argument. No one could ______ a word.
| A．get on | B．get in | C．get out | D．get into |
Having bought a new car, _________to tell my wife the good news.
| A．a phone call was made | B．a phone call was needed |
| C．I made a phone call | D．I would make a phone call |
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