[ Grammar ]
He … in the pool for half an hour.
A. Swam
B. Has swam
C. Has been swimming
D. Swim
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Indirect SpeechCommunicative GrammarActive and Passive Gerunds and InfinitivesTransportation VocabularyVerb FormIntermediate GrammarTenses - Present and PastComparative AdjectiveQuantifiers / Prepositions of Time and Comparative AdjectivesRelative Clauses and Past PerfectOther quiz:
Grammar › ViewIdentify the case of the pronoun used in the sentence.
The guard told us that the store is closing in 30 minutes.
A. nominative
B. objective
C. possessive
D. base
Sentences Function and Structure › View
Rewrite the sentence:
Unless you know the answer, do not raise your hand.
A. Do not raise your hand, unless you know the answer.
B. Do not raise your hand unless you know the answer.
Scientists study climate changes,
A. Aren’t they?
B. Do they?
C. Don’t they?
Homonyms › View
Don’t touch that, you might ___ it.
a. break
b. brake