---How long you in Singapore?---For just the weekend I’ll be back next Monday morning．A

问题补充：

---How long you in Singapore?

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

A. have; stayed

B. are; staying

C. did; stay

D. do; stay

答案：

A. have; stayed

(答案→)B. are; staying

C. did; stay

D. do; stay

解析：考查时态。根据下文句意：只到这个周末。下周一上午我就会回来。可知上文描述的是将要发生动作。表示运动的动词如go，arrive等动词的进行时态可以表示将来的状态，故选B，你要在新加坡呆多久？