问题
选择题
The little boy________in the mud all morning.No wonder he is dirty from head to foot. [ ]
A. has played
B. is playing
C. has been playing
D. was playing
答案
答案：C
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The little boy________in the mud all morning.No wonder he is dirty from head to foot. [ ]
A. has played
B. is playing
C. has been playing
D. was playing
答案：C