25. A: Mark, please don’t play basketball on the road. It’s very dangerous. B: _________. I am going home at once. A. Have a great time B. Sorry, I won’t do that C. I’d like to D. OK, with pleasure ...

21. A: Will you be able to come and help us clean the room? B: ______, but I’m doing my homework. A. I’d love to B. I hope not C. I do care D. I’m afraid not ...

19. A: Jack, will you please paint the chair yellow? B: ________? A. Pardon B. What is it C. How is it D. How about ...

16. A: _________？ B: I’ve got a headache. A. What’s the wrong with you B. What’s trouble C. What you’ve got D. What’s the matter with you ...

4. A: Would you like me to take you to the new shopping centre? B: ________, I ‘ve been there once. A. No, thanks B. No problem C. Yes, I think so D. That’s very king of you. ...

31. —Did Linda see the traffic accident? —No, no sooner ___ than it happened. A. had she gone B. she had gone C. has she gone D. she has gone ...

12. ——I reminded you not to forget the appointment. —— . A. So you did B. So I do not C. So did you D. So do I ...

44. —Well. I do think the rabbit is a beautiful, gentle animal which can run very fast. —___. A. So it is B. So is it C. So does it D. So it does ...

1. String s="This is the ";String t=s.concat("String."); t的内容是（） A. This is the String B. This is the C. String D. String This is the ...

39. String t="This is the ";String s="String" t+=s;t的内容是（） A. This is th String B. This is the C. String D. String This is the ...