The injured person was still ________ on the bed where he was ________.
[     ]
A. lying; lay  
B. lied; laying
C. lying; laid  
D. lain; lying
If a computer crashes, you will lose the file you ______ on if you don't save it early enough.  
[     ]
A. work          
B. are working        
C. will work          
D. worked
Hurry! The train ________. You know it ________ at 8?00 a. m..
[      ]
A. leaves; leaves
B. leaves; is leaving
C. is leaving; leaves  
D. is leaving; leaving
The couple don't generally give in to each other, so they ________ when they are together.
[      ]
A. have quarreled  
B. are always quarreling
C. had quarreled  
D. have been quarreling
—Can you guess what’s the front page news today?
—Of course, these days everybody _____ about the earthquake.
[     ]
A. is talking
B. talked
C. has talked
D. had talked
It________hard now，otherwise we could have a barbecue on the beach.
[     ]
A．rained  
B．is raining
C．rains  
D．would rain
-What’s that terrible noise?
-The neighbour________a table to the floor
[     ]
A．have fixed  
B．are fixing
C．fix  
D．will fix
—Have you decided when to leave for Beijing?
—Yes, I ______ the day after tomorrow.
[     ]
A. am leave
B. have left
C. left  
D. am leaving
Professor Smith, together with his assistants, ________on the project day and night to meet the deadline.
 [      ]
A. work  
B. working
C. is working  
D. are working
I am ________ both speaking and writing.
[     ]

A.concentrated
B.concentrating
C.concentrated on
D.concentrating on

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