A.I want to.
B.It doesn't matter.
C.Let's enjoy it. 
D.I'd love to.

A.You work?
B.How about you? 
C.You do not work.  
D.You work by train.

A.Congratulations 
B.Best wishes
C.Good luck 
D.Right

A.who
B.which
C.whose
D.whom

A.Who did that? 
B.What's wrong with him?
C.How did that happen?  
D.Why was he so careless? 

A.that 
B.what
C.how long 
D.where

A.It's a good line
B.The line is  bad 
C.I can hear you 
D.You can't hear me

A.Yes, I could.
B.Sure. 
C.I haven't got it with me.
D.I don't want to.

A.Certainly
B.That's nothing 
C.Yes, you are welcome 
D.Yes, I am glad about it

A.Sorry, I didn't know what you mean.
B.Ok, here you are. 
C.No, I won't.
D.I don't know.