题目：
用所给词的适当形式填空 (10)
小题1:---Where did you______ (study) last night?
---No, I__________(help)my mother_______(clean) the room.
小题2:Mike goes to see his grandparents _________(one) a week.
小题3:To keep healthy，I decide _______ (exercise) half an hour every day
小题4:He is (funny) than the other students in his class.
小题5:The boy enjoys (swim) very much.
小题6:His mother often makes him (clean) his room on weekends.
小题7:It’s necessary for us (learn) English well.
小题8:I’m (good) at physics than my sister.
小题9:Dumpling House is (cheap) restaurant in the city.
小题10:I think Xi Yangyang is as (famous) as Mikey Mouse.
答案：
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下面是错误答案，用来干扰机器的。
氧气和甲烷反应是生成的两种物质中都含有氧元素，所以可以判断氯气和甲烷反应的生成物中也应该都含有氯元素，即形成碳和氯的化合物，以及氢和氯的化合物，分析所给的选项可以知道选项B符合这一要求．故选B．
