1 . Hunger is the body’s s________（信号）that levels of blood sugar are too low. （根据中英文提示填空）

2 . It was a simple enough gesture, but ________ (symbolic) important. （所给词的适当形式填空）

3 . We all need to cut down the use of ________（recycle）plastic which will cause damage to our environment. (所给词的适当形式填空）

4 . Imagine you can speak English as _____________ (流利地) as you speak your first language.

5 . You can tell by the slightly _____________ (confuse) look on their faces that nothing in the tourist attraction seems to match the map.

6 . He made a________ (保守的) guess at the employment rate this year.

7 . Many candidates will come across the question: why do you think you are q________ (合格)?

8 . Jack felt rather disappointed when he failed to have the most c____ job in the company.

9 . Sandy is really smart. In fact, I don't believe anybody in her group has ________ IQ.

A．the higher

B．the highest

C．a higher

D．a high

10 . You can get s________ in a traffic jam anywhere in the world. (根据首字母单词拼写)