搜题
王老师:19139051760(拨打)
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第1题

The law requires that everyone _______ his car checked at least once a year. 选择一项： a. had b. has c. h
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第2题

I.d appreciate it if you could tell me how ________ the machine. 选择一项： a. operate b. operating c. to
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第3题

If you keep your house green, you avoid the ________ of many dangerous diseases. 选择一项： a. task b. chance
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第4题

There are ________ of ways to make your house look greener. 选择一项： a. plenty b. many c.
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