问题
选择题
You look so curious (好奇) about Beijing .Is this the first time that you _____ here ?
A．came
B．have come
C．had come
D．are coming
答案
答案：B
这题考查时态，句型：This is the first /second…time+从句，“这是第几次做…”，这个句型中从句用现在完成时，所以选B。