问题 更新时间2024/8/10 20:20:00 The little boy is dirty from head to foot because he______in the mud all morning.A. has played B. is playing C. has been playing D. was playing 答案 登录 注册 C 出自：国家开放大学 >> 国家开放大学英语语法
问题 更新时间2024/8/10 20:20:00
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问题 更新时间2024/8/10 20:20:00
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