[ 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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Grammar › ViewWhat type of sentence is this: Go sit in your seat.
A. Declarative
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What instrument is ued to measure length?
A. Graduated cylinder
B. Triple beam balance
C. Metric ruler
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The weather was cold; ________, he wore a jacket.
A. because
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C. although
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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