[ Use of Prepositions or Conjunctions ]
After so many trials, the experiment ____.
A. paid up
B. paid for
C. paid off
D. paid out
Select your answer:
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Grammar › ViewI __________ a cake three days ago.
A. burnt
B. have burnt
C. has burnt
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Oh! My parents __________ me now.
A. call
B. is calling
C. are calling
D. calls
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