1 . You ___________ have watered the flowers, for it is going to rain.（不必）（根据汉语提示填空）

2 . At present, ___ ___ ___ ___ ___ ___ anything about it .
他父母和他对这件事什么都不知道。(neither...nor...)

3 . _________ _________ _________ _________ , they couldn’t help laughing.
听到这个好消息，他们情不自禁地笑了起来。

4 . These old photos __________ __________ __________ the days I spent in the countryside.
这些老照片使我想起了我在农村度过的那些日子。

5 . The new school ___ ___ ___ ___ ___ me.  
新学校给我留下了深刻的印象。

6 . They ___ ___ the problem heatedly ___ the power went off suddenly.
他们正在热烈地讨论问题，这时突然停电了。

7 . We must not ___________________(看不见) the good traditions passed down from generations to generations.（根据汉语提示填空）

8 . They are broadening the main road __________________(加速) the flow of traffic.（根据汉语提示填空）

9 . She didn’t attend the party __________________(因缺乏) confidence.（根据汉语提示填空）

10 . He did not particularly want to __________(从事) a competitive sport.（根据汉语提示填空）