Topics: Past Modals
Choose the correct modal: She ___ have seen the email, since she didn’t tell me anything about it.
A. could not
B. might not
C. must
D. should
Select your answer:
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Grammar › ViewCoal, gas and oil are _____ forms of energy that cannot be replaced after used.
A. unlimited
B. renewable
C. nonrenewable
D. contaminated
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A speedboat is fast, whereas .
A. a sailboat relies on strong winds
B. a kayak is narrow
C. a canoe is slow