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What hardworking people! They are often seen ______ in the fields even in such hot weather.

A. to work
B. work
C. working
D. worked
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科目:初中英语 来源:月考题 题型:单选题

What hardworking people! They are often seen ______ in the fields even in such hot weather.

[     ]

A. to work
B. work
C. working
D. worked

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