问题
选择题
—How long _______ in Shanghai?
—I will be there attending a conference and giving a speech, which will take about 3 days.
A．have you stayed
B．are you staying
C．do you stay
D．did you stay
答案
答案：B
考查时态。根据答句I will be there attending a conference and giving a speech可知对方还没有去上海，所以该句应该是问你将要在上海呆多久？要用将来时态，B项采用进行时be doing表将来。