题目内容
根据句子意思,用括号中所给动词的适当形式填空。
1.These days students in some schools (ask) not to use mobile phones.
2.Li Ping is asking his uncle, an English teacher, (help) him improve English.
3.They caught the thief and (tie) his hands behind his back.
4.Sorry, I didn’t hear you clearly. I (think) about the exam.
5.—Look! Someone (clean) the sofa.
—Well, it wasn’t me. I didn’t do it.
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