2 . Complete the passage using noun clauses with words in brackets.

There are many mysteries about dinosaurs to which we long to find explanations. You may think that dinosaurs were big, green and scaly, right? In fact, it seems that they appeared very different from     1     (think).

In recent years, scientists have worked out     2     (look): many of them were small with feathers. However,     3     (have)feathers still isn’t clear-it might have been for communicating or for staying warm, but not just for flight.

Scientists also believe that many dinosaurs had bright colours. It seems     4     (depend on)their habitats. That is, dinosaurs which could fly would have had different colours to those living in the sea.

3 . 词组替换
1. If you will wait there for a second, my assistant will demonstrate the up-to-date machines in operation.
2. She has a low opinion of the suggestion that he may never return. He wants to give away all his modern possessions and go back to nature.
3. Then I realized that I wasn’t procrastinating from work. I was procrastinating from reading.
4. When you study in a foreign country, you will meet with new circumstances, environments, and predicaments.
5. He was not at all jealous of the interest with which Dorothea had looked up at Mr. Casaubon.
6. Luckily, this new study on sociological theories has helped explain the relation between identity and language use.
7. You shouldn’t pay any money until you get the contract in written form.
8. The fallout from the COVID-19 crisis is hitting ECCU economies hard, as tourist arrivals have stopped completely.
9. That’s the way history used to be- all powerful nations declined and were replaced by other empires.
10. The reform of teaching model will cause great changes in teaching procedures, so that it will have deep influence on educational ideas and theories.

4 . 一句多译（每空一词）
丹尼别无选择，只能使自己适应新的环境。
3. Danny ________ ________ ________ ________ ________ adapt himself to the new surroundings.
4.Danny ________ ________ ________ adapt himself to the new surroundings.
5. Danny ________ ________ ________ ________ adapt himself to the new surroundings.