[ If vs. Unless ]
_ _ _ _ _ _you stop smoking, you’ll be seriously ill.
A. If
B. Unless
Select your answer:

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Grammar › View………… books over there are easy to read, and they’ve good vocabulary.
A. these
B. those
C. that
D. this
Perfect Tenses › View
Do you think … by the time I return to this country next year?
A. they will get married
B. will they have got married
C. will they get married
D. they will have got married
