问题

It’s nice to see you again. What _____ since we last met? [ ]

A: have you done
B: had you done
C: have you been doing
D: did you do

正确答案是：

同类题型

With the help of high technology, more and more new substances ______ in the past years

Hello, Mike. Long time no see. Whereare you?—Oh, not only my parent but also I_______ Wuhan for a month.

The 18 college students in Fudan University should show their greatest respect to their hero — Zhang Ninghai instead of being cold and unfeeling

It was really very kind of you to give me a life home——-Oh, don’t mention itI_____ past your house anyway

Several years ago, very ______ people knew Yao Ming .But now he is well-known all over the world.