摘要： Glad to see you back. How long in Russia? A. did you stay B. have you stayed C. were you staying D. have you been staying Key: A C were staying 指过去一直呆在某地 而did stay 只指过去某一阶段的事
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Glad to see you back. How long _______ in Russia?
A. did you stay B. have you stayed
C. were you staying D. have you been staying
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Glad to see you back. How long _____ in Russia?
[ ]
A. did you stay
B. have you stayed
C. were you staying
D. have you been staying
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B. have you stayed
C. were you staying
D. have you been staying
Glad to see you back. How long in Russia?
A. did you stay B. have you stayed C. were you staying D. have you been staying
查看习题详情和答案>>