[ Grammar ]
My arms are aching now because _______________ since two o’clock.
A. I’m swimming
B. I swam
C. I swim
D. I’ve been swimming

Random Topics:
All, Both, Neither, None, EitherPast Perfect and Past Perfect ContinuousRelative Pronouns with PrepositionsVerb + Infinitive or GerundFuture Perfect vs Future ContinuousVerbal CommunicationSubjunctivesModifierswas werePast TensesOther quiz:
Grammar › ViewWhich sentence uses the correct article?
A. A water vapor rises into the atmosphere.
B. An water vapor rises into the atmosphere.
C. The water vapor rises into the atmosphere.
Prepositional Phrases › View
She said goodbye and thanked us ______ coming.
A. in
B. about
C. for
Grammar › ViewYou ……………………… dinner.
A. are not cooking
B. are not playing
Past Tense and Neutral › View
The boys helped Mrs Gopal ________ the books to her table.
A. carrying
B. carry
C. carries
D. carried