问题补充：
Because of Project Hope,children have better lives.
A. thousand
B. thousands
C. thousand of
D. thousands of
答案：
A. thousand
B. thousands
C. thousand of
(答案→)D. thousands of
解析：thousand要和具体数字连用来修饰名词，thousands要和of连用修饰名词，意为数以千计的。所以选D.
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