－Why do you look so worried ?

－My computer broke down and my essay ________ unfinished since．

A．has been left

B．was left

C．had been left

D．has left

－Why didn't you try your best to get on the train?

－I tried , but ________ I could , it started to move．

A．when

B．after

C．until

D．before

－Jenny, I hate to say it, but you really must go!

－________．

A．All right, if you insist

B．Not likely

C．Mind your own business

D．You must be kidding

－I remember I left my laptop in the study last night．Why ________ here?

－Oh, I thought you might need it so I brought it here for you．

A．does it come

B．has it come

C．had it come

D．will it come

－Dad, dad! My head hurts so much．I think I'm dying．

－________ , darling! The doctor says you will feel better soon．

A．That will do

B．There, there

C．Hi, there

D．So long

－Why, my new computer is rubbish! Five hours has passed and it still hasn't finished the downloading．

－Don't worry．You know, sometimes the Internet ________ be very slow．

A．can

B．may

C．should

D．must

－Would you like to join us in the barbecue this afternoon?

－Sorry, ________．

A．I'd love to

B．I'm tied up

C．it all depends

D．I'm not interested

－The band plans to hold a live concert next Tuesday．

－I'd rather they ________．The stage may not be ready until Wednesday．

A．will not

B．wouldn't

C．hadn't

D．didn't

－I wonder if I can board the plane with this return ticket．

－There ________ be no problem．Your ticket is valid until the end of this month．

A．must

B．could

C．should

D．might

－So you don't like my cat, do you?

－Oh, ________．He is just a bit-surprising．

A．don't worry about it．

B．don't let me down

C．don't take it for granted

D．don't get me wrong