1 . I’m a bit worried about ______ with the other students in my advanced course.
我有点担心在高级课程上无法跟上其他同学。

2 . I play computer games if ______.
如果不忙于学习的话，我会玩电脑游戏。

3 . It is no use ______ (advocate) improving public transport unless we can pay for it. (所给词的适当形式填空)

4 . 有人认为黄色一般与自信、自尊和友好有关。
_________________ yellow is linked with confidence, self­respect and friendliness.

6 . It is a waste of time _________ (try) to explain the problem to him. (所给词的适当形式填空)

7 . 在每个出版商都拒绝我之前，我不会放弃。(not...until) （汉译英）
________________________________________________________________________.

8 . It is no use ____________ (complain) all the time and what you should do is look on the bright side. (所给词的适当形式填空)

9 . So difficult did I feel it to live in an English-speaking country that I was determined_____ ( learn) English well. （所给词的适当形式填空）