4. 一旦看到，这里的风景很难被人忘记。

Once　　　　 　, the scenery here won?t be easily forgotten.

3. 尽管天气已经转暖，房后的雪却一直没有融化。

　　　　　 　it turns warm now, the snow behind the house hasn’t　　　　 　.

2. 他经常很晚回家，这让他的父母很担心。

He often comes home late,　　　　 　makes his parents　　　　 　.

1. 你知道为什么骆驼可以在没有水的情况下活很长时间吗？

Do you know 　　　　　camels can　　　　 　for a long time without water?

4. Aristotle once held the idea that heavy objects always fell faster than light ones but that　　　　 　untrue later.

3. He　　　　 　to be reading an important paper when the boss entered.

2. Visitors were　　　　 　at the achievements in the car manufacture of the city during the past decade.

select/amaze/pretend/prove

1. She lets her son　　　　 　his own Christmas present.

5. We’d better r　 　the box out of the room; it takes too much room.

4. I think he would come but it’s only a f　 　　of mine.