— How long in singapore?— For just the weekend. I’ll be back next Monday morning.A. have

问题补充：

— How long in singapore?

— For just the weekend. I’ll be back next Monday morning.

A. have you stayed

B. are you staying

C. did you stay

D. do you stay

答案：

A. have you stayed

(答案→)B. are you staying

C. did you stay

D. do you stay

解析：考查时态。本题用现在进行时表示将来时，指按照计划安排要发生的事情。句意：—你在新加坡要呆多长时间？在新加坡呆多长时间是事先计划的好的，所以使用现在进行时表示将来时。故B正确。