根据所给汉语完成句子

你的房间太乱了，去把它整理好。

Your room is very untidy, go and ________ it ________　________．

根据所给汉语完成句子

你妈妈对这条消息有什么反应？

What’s your mother’s ________　________ the news?

根据所给汉语完成句子

他在楼梯底部摔倒了。

He fell down ________　________　________　________ the stairs．

根据所给汉语完成句子

房间里很快小孩子就满了。

The house was soon ________　________ children．

根据所给汉语完成句子

在我包送给汤姆的礼物时，尽量别让他到房间里来。

Try to ________ Tom ________　________ the room while I wrap his present．

用find, find out, look for, discover 的正确形式完成下列句子。

1．It was Columbus who ________ the New America．

2．He was stealing money from the company for years before they ________ him ________．

3．They ________ him a place to live in．

4．Did you ________ what you were ________　________?

用react to, react with, react on, react against的正确形式完成下列句子。

1．The little girl is ________　________ her father’s strictness．

2．Iron ________　________ water and air to produce rust．

3．Local residents have ________ angrily ________ the news．

用add, add to, add up, add up to的正确形式完成下列句子。

1．The bad weather only ________ our difficulties．

2．The numbers ________ exactly 1000．

3．He ________ the bill and found that he had been overcharged．

4．________ a few more names ________ the list．

5．I’d like to ________ that we are pleased with the result．

选择合适的短语填空

1．He has a lot of things to ________ before he leaves．

2．________ that no one finds out about it．

3．________ that dog ________ my study．

4．Don’t ________ her waiting outside in the rain．

5．He started his life ________ and worked his way to the top．

6．An acid can a ________ alkali to form a salt．

7．The inflation has ________ our difficulties．

根据课文内容和重点短语填空

　　A．Metals are widely used in the world．It’s hard to ________　________ a world without metals．If we want to use metals well, I think it’s necessary for us to know how exactly they ________　________ different substances, for example, water．From the table we know, ________, ________ and ________ can react with cold water．And ________, ________ and ________ can react with steam．But iron only has reaction with water and steam, ________ has no reaction with them at all．

　　B．Let’s do an experiment aiming to find out if there’s a change in weight when copper burns in air．Use the following apparatus to do an experiment．Write down the method．

copper, Bunsen burner, a balance, a crucible

　　First, put the copper in the ________．Then put the ________ on the ________ and weigh it．Next heat the copper．Light the ________ and hold the ________ over it．Finally, weigh the copper again．

　　Result：It weighs a lot heavier than before．

　　Conclusion：There is a change in weight when copper burns in air．