题目内容
【题目】Mary is hard-working. She always ________ one hour doing her homework every day. （ ）
A. spend B. spent C. spending D. spends
【答案】D
【解析】
略
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题目内容
【题目】Mary is hard-working. She always ________ one hour doing her homework every day. （ ）
A. spend B. spent C. spending D. spends
【答案】D
【解析】
略