Professor Smith, along with his assistants,______ on the project day and night t
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Professor Smith, along with his assistants,______ on the project day and night to meet the deadline. |
[ ] |
A. work B. have worked C. is working D. are working |
答案
C |
举一反三
My money ________.I must go to the bank to draw some of my savings out before I"ve none in hand. |
[ ] |
A.has run out B.is running out C.has been run out D.is being running out |
Email,as well as telephones ________ an important part in daily communication. |
[ ] |
A. is playing B. have played C. are playing D. play |
— Just now Jenny gave ten dollars to a person in trouble. — She________others. |
[ ] |
A. was always helping B. is always helping C. always helped D. had always helped |
"The moment ________ soon," he thought to himself, waiting nervously. |
[ ] |
A. came B. has come C. was coming D. is coming |
Ladies and gentlemen,please fasten your seat belts,the plane______. |
[ ] |
A.takes off B.is taking off C.is going to take off D.is to take off |
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