[ Grammar ]
Jeanette did very badly on the exam. She _____ harder.
a. must have studied
b. should have studied
c. could have studied
d. must studied

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Modals › ViewThe phone is ringing. It _________be Charlotte; she said she would call this morning.
A. can´t
B. might
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would should could › View
You _____ see a doctor if your headache doesn’t get better.
A. would
B. should
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A. because
B. for instance
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Grammar › View
Ava ________ abroad for a year and now she is coming back home.
A. had studied
B. is going to study
C. studied
D. has been studying