-Hi,Tracy,you look tired.-I________the living room for three hours.[     ]A.pain

-Hi,Tracy,you look tired.-I________the living room for three hours.[     ]A.pain

题型:同步题难度:来源:
-Hi,Tracy,you look tired.
-I________the living room for three hours.[     ]
A.paint    
B.had painted
C.was painting  
D.have been painting
答案
D
举一反三
The little boy ________  in the mud all the morning. No wonder he is dirty from head to foot.[     ]
A.has played  
B.is playing
C.has been playing  
D.was playing
题型:同步题难度:| 查看答案
-That"s the third time he"s won the award in this field.
-Yes. He ________ his maximum potential in the past decade.[     ]
A.explored  
B.is exploring
C.has been exploring  
D.has explored
题型:同步题难度:| 查看答案
I have to see the doctor because I ________ a lot lately.[     ]
A. have been coughing  
B. had coughed
C. coughed  
D. cough
题型:同步题难度:| 查看答案

Joseph ________ to evening classes since last month, but he still can"t say "What"s your name?" in
Russian.


[     ]
A. has been going  
B. went
C. goes  
D. has gone
题型:同步题难度:| 查看答案
—Those scientists invented a robot to care for kids!
—It"s not surprising. They ________ wonders all the time.[     ]
A. worked
B. were working
C. work
D. have been working
题型:同步题难度:| 查看答案
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