题目内容
— Come on, Kitty.
— Oh, good heavens! Both my legs are nearly to give out. I ____ for hours like a dog.
— Oh, good heavens! Both my legs are nearly to give out. I ____ for hours like a dog.
[ ]
A. have been walking
B. had walked
C. was walking
D. walked
B. had walked
C. was walking
D. walked
A
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