21. -----Why, this is nothing but common vegetable soup!
----_____, madam. This is our soup of the day.
A. Let me see B so it is C Don ‘t mention it D Neither do I
【答案】B
【解析】考查交际用语。根据对话内容：——这只是平常的蔬菜汤！——确实，夫人。这是我们白天的汤。
22.They might just have a place ______on the writing course一why don't you give it a try?
A. leave B. left C. leaving D. to leave
【答案】D
【解析】考查非谓语动词。固定短语have sth to do。
23. Try not to cough more than you can since it may cause problems to your lungs.
A. check B. allow C. stop D. help
【答案】D
【解析】考查动词辨析。根据句意：由于咳嗽可能造成你肺的一些问题，因此要试图咳得不要超过你能忍受的范围。
