[ Grammar ]
He … in the pool for half an hour.
A. Swam
B. Has swam
C. Has been swimming
D. Swim

Random Topics:
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:
Verbs of movement › ViewDon’t __________ your nose, or you’ll have an argument with someone.
A. touch
B. break
C. pick
D. scratch
Relative Clauses › View
I come from a city _______ is located in the southern part of the country.
A. where
B. which
C. that
D. both ‘which’ and ‘that’
Question Tags › ViewScientists 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