The landlady often asks me to ______ her children when she is busy cooking.

单选题

The landlady often asks me to ______ her children when she is busy cooking.

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单选题

How often ______ to the dentist?

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判断题

多长时间一趟车?How often do the trains come?( )

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单选题

The former pays attention to the () form, and often uses the compact structure to reflect the logic of thinking;

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单选题

Uncle Sam often wears tall hat，________and the stars and stripes of the American flag.

答案解析