第11题单选 (　)--I usually travel by train.

　　--Why not __________by plane for a change?

　　A.to try going

　　B.trying to go

　　C.to try and go

　　D.try going

　　第12题单选 (　)I first met Lisa three years ago. She __________ at a radio shop at the time.

　　A.has worked

　　B.was working

　　C.had been working

　　D.had worked

　　第13题单选 (　) --Waiter !

　　--__________?

　　--I can't eat this. It's too salty.

　　A.Yes, sir

　　B.What

　　C.All right

　　D.Pardon

　　第14题单选 (　) __________,flowers need a lot of sun and water.

　　A.When growth

　　B.They are growing

　　C.When they growing

　　D.When growing

　　第15题单选 (　)I don't have any __________ in learning English grammar, but I often make spelling mis- takes.

　　A.difficulty

　　B.troubles

　　C.difficulties

　　D.problems

　　第16题单选 (　)--Do you know anything about the Trade Union Dinner?

　　--Yes, we__________an official invitation.

　　A.send

　　B.are sent

　　C.have sent

　　D.have been sent

　　第17题单选 (　)Suddenly she turned and __________ Xiao Hu.

　　A.came in sight

　　B.caught sight of

　　C.was at first sight

　　D.was out of sight

　　第18题单选 (　) When a machine is started,at first it runs slowly,and then __________.

　　A.fast and fast

　　B.faster and faster

　　C.fast

　　D.faster

　　第19题单选 (　)--I have to go under any circumstances.

　　--If you do follow my advice, I __________you.

　　A.don't punish

　　B.would not punish

　　C.would punish

　　D.won't punish

　　第20题单选 (　)The fact__________his health is bad is not true.

　　A.which

　　B.that

　　C.as

　　D.what

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