______ Flying Luxury Hotel of Tomorrow is ______ huge 400-ton aircraft without wings.

A．/, a        B．The, a       C．The, the        D．A, a

The Internet and the effect        brought about did a lot of good to our daily life and work.

A．that            B．what            C．which            D．it

____ no cash for food, he broke into an old woman's house, hoping to steal some money.

A．Because         B．As          C．Since            D．With

Not until the train pulled into the next station _______ her suitcase gone.

A．Mary had found                                 B．had Mary found

C．did Mary find                                     D．Mary found

The silence of the library is sometimes broken by a sudden cough or the sound of pages     .

A．turning            B．turned              C．being turned            D．having turned

If the food tastes nice, I’ll go to buy some more; _______, I won’t go.

A．if not        B．when not       C．if any        D．when ever

Failure hurts grown-ups and children___________, but it can make a positive contribution to your life once you learn to use it．

A．a(chǎn)ctively 　　　 B．likely          C．a(chǎn)like         D．similarly

After the quarrel, I tried all my best to fix the misunderstanding between us, but all my efforts seemed _____.

A．in trouble          B．in case       C．in effect        D．in vain

The one concern for parents and students is _______ the student pursues their university education in a foreign country; the student will not have the opportunity to establish social contacts in China.

A．that           B．that if           C．whether         D．how

______ it have been the failure to pick up directions from the ground control that caused the air crash?

A．Must       B．Could         C．Would          D．Should