[ Modal Verbs ]
You _____ buy the book. you could have borrowed it from the library
A. didn’t have to
B. can’t
C. have to
D. could
Select your answer:

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Grammar › ViewIf we ……… littering, the environment will be polluted.
A. turn off
B. go on
C. go to
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It _______________ that the President had suffered a heart attack.
A. is reported
B. has reported
C. was reported
D. will be reported
