5. Sit ___________(任何地方)you like.　 随便坐在哪里吧。 6. ___________(任何地方)it is possible, he tries to help.　 只要有可能，他总是设法帮忙。

(20)1. Just to ___________(满足) my curiosity, how much did you pay for your car?　 我只是出于好奇，请问你买这辆车花了多少钱？

3. Come ___________(任何时候) you like. 你什么时候想来就来。 4. I'd like to see you 　___________(任何时候)it's convenient. 在你方便的时候我想来看看你。

4.The merchant _________(提供) goods to them.

另：The merchant supplied them with goods. 商人向他们供应货物。

(17) 1. _____________________(无疑) every effect must have a cause. 无疑，每个结果必定有其原因。 2. I can't say_________(确定) when he will arrive. 我说不准他什么时候会来。 3. For _________(某种) reasons I will be unable to attend the meeting. 因为某种原因，我不能出席这次会议。

(18)1. A soldier was wounded in the_________(交火). 一名士兵在交火中受伤。 2. He gave me an apple ______________(交换)an orange. 他给我一个苹果，交换一个橙子。 3. We ___________(交换)our opinions about the event at the meeting. 在会上，我们就此事交换了意见。

(19)1. Anyone seen carrying boxes, bags, or ___________(任何东西), was stopped by the police. 谁如果带什么袋子、盒子什么的，被警察看见了都要被叫住。 2. ___________(任何东西)I say, he always disagrees. 不管我说什么，他总是不同意。

3.The brain needs a continuous _________(供应) of blood.　 大脑需要不断地供血。

2. Pollution of the water _________(供应) reached a level pernicious to the health of the population.水源污染已经达到危及居民健康的程度。

10. He has to_________(减少) on the consumption of meat. 他不得不减少吃肉。

(16)1．The camp has a plentiful _________(供应) of food. 营地有充足的食品供应。

9. Do not _________(砍伐) the tree that gives you shade.[谚]遮荫之树不可砍。

8. On no account should we _________(减少) the outturn. 我们绝不可以把产量降低。

6. I think such customs will soon _________(消失). 我想这些风俗不久就会逐渐消失。 7. The lecture was so dull that soon the audience begin to _________(离开). 演讲单调乏味，不久，听众就开始陆续离席了。

5.His interest in this subject gradually _________(减少). 他对这门学科的兴趣逐渐减退。