－What's your impression of the Great Wall?

－Wonderful! Once _________ , it can never be forgotten．

A．seen

B．seeing

C．being seen

D．saw

－Your train was late last night．

－Yes, it was midnight _________ it finally arrived．

A．that

B．when

C．since

D．until

－How about going camping tomorrow?

－I suppose not, because I _________ from a bad cold．

A．am suffering

B．suffered

C．suffer

D．had been suffering

－May I put my luggage on the seat beside you, sir?

－_________．

A．With pleasure

B．Go ahead

C．Never mind

D．Take it easy

－My name is Annabelle．Shall I spell it for you?

－________．

A．If you don’t mind

B．Not at all

C．Take it easy

D．Nice to meet you

－Goods imported from abroad are ________ those made in China．

－Yes．Some of the goods made in our country are of high quality．

A．always as good as

B．always no better than

C．not so well as

D．not always better than

－Are you worried about her safety?

－Just _________．She isn't alone．

A．entirely

B．gradually

C．generally

D．slightly

－Bob，are you free at the moment？I have to ask you some questions．

－_________．

A．It's a pleasure

B．Ask, please

C．Help yourself

D．Yes, go ahead

－Hello, Tim．Are you going in for the bike riding competition next week?

－Sure I am! Can’t you see that I ________ for it?

A．have prepared

B．was preparing

C．am preparing

D．prepare

－Did you enjoy yourselves last night?

－No．The concert had to be _________ because the singer went down with a bad case of flu．

A．gone off

B．broken off

C．paid off

D．called off