[ 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:
Past Simple › ViewI __________ (visit) my grandparents last holidays.
A. visitd
B. visitied
C. visited
Tenses › View
At present they __________ to LA. (travel)
A. are travelling
B. were travelling
C. have been travelling
D. will be travelling
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