尽管火箭看起来庞大复杂，其实只是个相当简单的装置。

货物运输 ( )运达地点

I’m sorry about the misunderstanding.

一You__________ apologize，it wasn’t your fault.

A.couldn’t

B.mustn’t

C.wouldn’t

D.needn’t

Jason made sharp comments on Mary’s idea，but he didn’t mean __________ her.

A.Hurt

B.Hurting

C.to hurt

D.to be hurt

Let’s go to the airport a little earlier __________ we can choose better seats.

A.by that

B.so that

C.for that

D.now that

My secretary usually opens my post__________ it’s marked“private”.

A.unless

B.if

C.as

D.for

The pianist didn’t __________ until the last minute before the concert.

A.turn off

B.turn on

C.turn out

D.turn up

The old man，together with his neighbors，__________ the performance when it began to rain.

A.was enjoying

B.were enjoying

C.has enjoyed

D.have enjoyed

My teacher recommended that l__________ as careful as possible when I took an exam.

A.am

B.were

C.be

D.will be

Several novels by Mo Yan __________ into English so far.

A.are translated

B.have been translated

C.were translated

D.had been translated

It is __________ that text messaging while driving is dangerous.

A.necessary

B.sufficient

C.obvious

D.significant