题目内容：

— I must go now.The plane will leave in half an hour.Thank you for seeing me off.
—____________
A.Good luck.
B.Be careful.
C.Best Wishes.
D.Hurry to catch the plane.

优质解答

老外不会说B,D.C的话场合不合适.所以应该是A
A也是一般离别时的用语