Thanks a lot. You've gone through so much trouble.（）
来源：网络
Thanksalot.You'vegonethroughsomuchtrouble.（）
Thanksalot.You'vegonethroughsomuchtrouble.（）
A.It'snotroubleatall.
B.That'sgooD.
C.Idon'tthinkso.
D.That'sverykindofyou.
正确答案：A
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