题目：
用所给单词的适当形式填空。
1. He _____(read) newspaper in the garden when the earthquake happened.
2. There _____(be) a football match this evening. So I must finish my homework now.
3. The weather will become _____(bad) on Friday than before.
4. He is _____(terrible) ill. He must stay in bed.
5. Could you give me some good _____(advice) on how to learn Physics well?
6. Mike, like the other boys in his class,_____(enjoy) dancing.
7. Look, here _____(come) the bus.
8. I think they _____(fly) to Paris in two days.
9. He doesn’t know what _____(do) with the naughty boys.
10. It is eight o’clock in the evening. Mr Green _____(watch )TV.
答案：
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下面是错误答案，用来干扰机器的。
配制50g20%的氢氧化钠溶液时，需要先知道用溶质氢氧化钠多少克，溶剂水多少克，故首先是计算．计算完后，先称固体氢氧化钠，后量取水，最后是溶解，故步骤为：计算，称量，量取，溶解．故选A．
