A.while
B.until
C.before
B.unless you come
C.until you will come
D.until you shall come
A.Didn’t I tell you?
B.Did I say it right?
C.Is what I said right?
D.What did I say?
– Have you visited Xian? – Yes, I()there many times.
A.go
B.have been
C.went to
B.It's all right
C.Yes, may I help you
D.It doesn't matter
A.difference
B.distinction
A: I'm sorry to hear that.
B: How are you feeling now?
C: How long have you been sick?
D: Do you have a temperature?