[ Conditional Sentences ]
If the door is open,
A. you could come in.
B. you could have come in.
C. you can come in.
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Grammar › ViewChoose the correct verb from the choices
Twenty Thousand Leagues Under the Sea (is, are) one of the first science fiction stories.
A. is
B. are
Adjective vs. Adverb › View
The boat landed on an island near the coast
A. Adjective
B. Adverb
Is there a cat?
A. Yes, there is.
B. Yes, there are.
C. No, there isn’t.
D. No, there aren’t.
Vocabulary and Grammar › View
Choose the correct form of ‘unless’: You won’t succeed ________ you try your best.
A. if
B. unless
C. until
D. although