—Xiao Zhang, I can’t play ping-pong at all. I wonder if you could teach me.
—（）Just name the day.

单项选择题I was under the impression that he was a very slow boy（）he succeeded in writing a big book.

A. when
B. after
C. as
D. until

单项选择题Why couldn’t the speaker meet with Mr. Smith as soon as he arrived（）

A. He missed the appointment.
B. He arrived late.
C. He was sick.