1 . You’ll never speak English well________you often practice it.

A．unless

B．if

C．or

D．otherwise

2 . People who lack adequate housing are found in every country of the world and, ________, in almost every community.

A．indeed

B．otherwise

C．however

D．therefore

3 . We took some effective measures to change the financial condition of our company. ________, it would have got worse.

A．Otherwise

B．Therefore

C．Meanwhile

D．However

4 . High speed trains are seldom delayed or cancelled due to weather conditions. ________, they have become the first choice for many passengers.

A．Besides

B．However

C．Therefore

D．Otherwise

5 . He never complains about the difficulties he has in life. ________, he always has ways to overcome them.

A．However

B．Otherwise

C．Instead

D．Therefore

8 . 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.

10 . 根据句意，选择单词或短语并以其适当形式填空。

escape        confirm        relieve        comfort        conduct        admire        reflect        vehicle        distinguish   evaluation        otherwise        keep a record of        account for        in charge        succeed in

1. We had to travel in several ________, including a very old bus.
2. I sat on the ground with my leg crossed for more than an hour, which caused me some ________ .
3. Research has ________ that the risk is higher for elderly men.
4. Don’t try to put out an electrical fire with water, as water is very good at ________ electricity and you may get hurt.
5. It is impossible to ________ the danger of a climb by just looking at photos of a mountain.
6. The film is about a tiger that ________ from a zoo and tries to get home.
7. Ms. Williams is the person ________ of this organization — if you want answers, you’ll have to talk to her.
8. To date, the charity has provided ________ for over 150, 000 refugees.
9. The terrible flood ________ the poor harvest last year.
10. You should always avoid fallen power lines after a storm, ________ you might get hurt.
11. Everyone was filled with ________ for the painting and sang high praises for the painter.
12. A rainbow forms when light from the sun is ________ by drops of water in the sky.
13. It is still not known if Mallory ________ reaching the top of Qomolangma before it took his life.
14. As the lights were out in the room, it was hard to ________ anything.
15. My mother is in the habit of ________ every payment she makes.