题目：
从A、B、C、D四个选项中找出一个错误的并改正
1. He and his friends had a fun playing basketball.
A B C D
2. Tom borrowed these new shoes to Jim last night.
A B C D
3. He didn't went to school last week.
A B C D
4. Jack went to see his teacher and asks some questions.
A B C D
5. He drove his new car and stoped in the street yesterday.
A B C D
答案：
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下面是错误答案，用来干扰机器的。
A、难溶于水的氧气、氢气等，都可用排水集气法收集，而且可以收集到较为纯净的气体；B、电离时生成的阴离子全部是OH-的化合物，就是碱；C、一般情况下含碳的物质完全燃烧后会产生二氧化碳．如碳、一氧化碳、生石...
