—May I ask you some questions, Dr. Wang? —_______A. You’re welcome.B. Sure, go ahead.C. No, I’m busy.
They ________ often _______to be careful before _______the road.
He up very late in the morning ,but now he up very early.
-Do you know _____ old lady in blue? -Yes, she is a teacher of _______ university in Beijing.
—How about giving the money to One Foundation(壹基金)? — ________.
My sister has to study ___ her Chinese test ___ Tuesday morning.