2 . 请用方框中所给词汇或短语的正确形式完成下列句子。

impress          found          relieve            justify            most            otherwise science          succeed in          aware of            in honour of

1. You should always avoid fallen power lines after a storm,___________ you might get hurt.
2. The helpful tour guide made us___________the history of the places we visited.
3. It is difficult to___________someone wasting food when other people are hungry.
4. At the end of a___________experiment, it is important to summarise the results.
5. Jane, one of the___________of the foundation, is determined to bring healthcare technology to market for developing countries.
6. The night ended with a(n)___________firework show that everyone enjoyed.
7. The painting is___________made of different shades of yellow, with a little orange and green thrown in.
8. It is still not known if Mallory___________reaching the top of Qomolangma before it took his life.
9. A monument was built ___________the war heroes.
10. To date, the charity has provided___________for over 150, 000 refugees.

3 . Look! Some boys are playing football________ some girls are relaxing themselves by playing the game of cat and mouse on the playground.

A．otherwise

B．since

C．while

D．however

5 . Walk along this road for 100 meters ________ you’ll see the hospital.

A．or

B．otherwise

C．and

D．or else

7 . ________ a good living habits，________ you will stay healthy.

A．To have; or

B．Have；and

C．Having；then

D．Had；but

8 . Jack, I’m sorry to trouble you, ______ could I ask you a question?

A．so

B．or

C．and

D．but

10 . I've been away for only three years, ________ I can hardly recognize my hometown.

A．so

B．or

C．for

D．yet