21.—Go for a trip to Qingdao，OK?
— ________. I’d like to see the sea.
A. I couldn’t agree more B. I’m afraid not
C. I believe not D. I don’t think so
22. I didn’t ________ my primary school classmate Jane until I listened to her self-introduction.
A. know B. recognize C. find D. realize
23. It is the fourth time that she ________you in a week.
A. rings B. has rung C. has been ringing D. is ringing
