二、单项填空（共15分）
21. ---I’m sorry I shouldn’t have laughed at you the day before.
--- _________ .
A. My pleasure B. Thanks C. Take it easy D. Forget it
22. ---Chatting online has become_________popular means of communication..
---That’s true. It is especially popular with young.
A. / ; the B. a ; the C. / ; / D. a ; /
