题目内容：

根据下列句意在横线上写出空缺处各单词的正确形式。(每空一词)

1.He was replaced with one of our younger _______________(指导者).

2.They _________(寻找) in vain for somewhere to shelter and was at a loss .

3.The plant ___________(相像) grass in appearance.

4.This reference book is ___________(方便使用) than that one.

5.It’s about time we ______________(更新) our software.

6.She has been reliable and ____________(守时).

7.It can be _______________(窘迫) for children to tell complete strangers about such incidents.

8.The stroke left his right side _____________(永久) damaged.

9.I will come tomorrow, weather _______________(允许).

10.In fact, many _______________(现象) are not even subject to scientific explanations.