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So sudden ________ that the enemy had no time to escape.

A．did the attack 

B．the attack did

C．was the attack 

D．the attack was

—Is everyone here?

—Not yet... Look, there________the rest of our guests!

A. come                       

B. comes

C. is coming                  

D. are coming

If you have a job，________yourself to it and finally you'll succeed.

A. do devote 

B. don't devote

C. devoting 

D. not devoting

Though________to see us，the professor gave us a warm welcome.

A. surprising 

B. was surprised

C. surprised 

D. being surprised

________a strange plant! I've never seen it before.

A．Which             

B．What    

C．How              

D．Whether

I told them not everybody could run as fast as you did, ________ ?

A．could he           

B．didn't I

C．didn't you                             

D．could they

Jane won't join us for dinner tonight and ________.

A．neither won't Tom 

B．Tom won't either

C．Tom will too 

D．so will Tom

It sounds like something is wrong with the car's engine. ________， we'd better take it to the garage immediately.

A. Otherwise                   

B. If not

C. But for that                 

D. If so

Only after they had discussed the matter for several hours________ a decision.

A．they reached       

B．did they reach

C．they reach         

D．do they reach

—It's nice.Never before ________ such a special drink!

—I'm glad you like it.

A．I have had              

B．I had

C．have I had              

D．had I