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【单选题】
—Hello there, what can I do for you, sir?—_____________________.

I can do it myself.
No, youre welcome.
I would like to buy a pair of glasses.
Yes, thank you.
【单选题】
A: What would you like, sir? B: [填空].

Two cups of coffees
Two coffees
Two cup of coffee
Two cups coffee
【多选题】
Ill go to see Mr. Smith, ______________ .

time permitted
time permitting
if time permitted
if time permits
【单选题】
Good morning, sir. May I help you?

No, I don’t buy anything
No, I don’t need your help
Yes, I need some sugar
Oh, no. That’s OK
【单选题】
A: Sir, do all the buses go downtown?B: [填空].

No,never mind
Sorry,Im new here
Pretty well,I guess
Wow,you got the idea
【单选题】
He designated Smith [填空] his successor.

for
as
at
in
【单选题】
Excuseme,couldyoushowmethewaytothenearestpostoffice?—_______Oh,yes!TwoblocksawayfromhereattheGreenAvenue.Youcan’tmissit.

Ibegyourpardon?
Whatdoyoumean?
You’rewelcome.
Mm,letmethink.
【单选题】
——May I put my luggage on the seat beside you, sir? ——____.

Sure,withpleasure
Okay,pleaseyourself
Well,nevermind
Yes,helpyourself
【判断题】
A: What can I do for you, sir? B: Nothing.

正确
错误
【多选题】
Smith裂解法中用到的试剂有

过碘酸
四氢硼钠    
浓硫酸
氢氧化钠
稀盐酸