[ Subordinating Conjunction ]
You can’t go swimming ______ you wait an hour after eating.
A. while
B. unless
C. until
D. if

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Present Simple: affirmative, negative, interrogativePrepositionsAdverbs, Prefixes, and SuffixesModal and Modal PerfectCorrelative conjunctionsActive and Passive voiceShould and Shouldn'tPast Tense & Past Continuous TenseGrammar - NounsConditionalOther quiz:
a, an, the, Zero Article › ViewMy friend studied __________ Spanish history at college.
A. –
B. The
C. An
D. A
Grammar › View
A: Would you like to reserve the book
B: …………………………………………………………………
A. Yes, here it is.
B. OK, I’ll check the computer.
C. No, thank you.
D. I’ll call you when I have it.
If Conditionals › ViewIf you don’t hurry up, you ____ the bus.
A. miss
B. will miss
C. missed
D. should miss
Future Tenses › View
The sun is shining brightly. I don’t think it _____.
A. is going to rain
B. will rain
C. is raining
D. rains
