[ Modal Auxiliaries ]
Years ago, people _________ only travel to Antarctica by ship.
A. could
B. must
C. may
Select your answer:

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Conditionals and Wishes › ViewI will sign the contract provided that you offer a discount on large orders.
= As long as you sign the contract, I will offer you a discount on large orders.
A. TRUE
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Grammar › View
The Math test is ___ . I have to study harder next time.
A. easy
B. happy
C. difficult
D. expensive