[ Grammar ]
While Aaron (work) ___________ in his room, his friends (swim) ____________ in the pool.
A. worked/had worked
B. had worked/were working
C. was working/were swimming
D. was working/have been working

Random Topics:
Present and Past Simple PassiveFuture Tense (will/be going to/p.continuous)Simple Present & Present ProgressiveTenses and StructureTransition WordsConjunctive Adverbs and PunctuationComparative AdverbsTOEICModal AuxiliariesAdverb PhrasesOther quiz:
Grammar › ViewIf water is left out in the cold at 0°, it ________.
A. freezes
B. froze
Grammar › View
Identify the SUBJECT: All the papers flew off my desk.
A. All the papers
B. Flew
C. Off
D. My desk
Tenses › ViewHe _______________________(MAKE) noise for a whole hour before the neighbours finally ___________________ the police. (CALL)
A. was making / called
B. had been making / called
C. has been making / called
D. is making / call
Grammar › View
I _______ my umbrella and got soaked in the rain.
A. Broke
B. Lost
C. Opened
D. Closed
