______ kind-hearted people join the volunteer project every year.

A. Thousand
B. Thousands
C. Thousand of
D. Thousands of
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科目：初中英語 來源：月考題 題型：單選題

______ kind-hearted people join the volunteer project every year.
[     ]
A. Thousand
B. Thousands
C. Thousand of
D. Thousands of

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