[ Tenses ]
Yesterday they ……… the room which …………… by the kids.
A. cleaned / ransacked
B. were cleaning / was ransacked
C. cleaned / had been ransacked
D. were cleaning / ransacked

Random Topics:
For vs SinceDeterminersPhrases & ClausesSimple Present and Present Continuous TenseAdjectives and ArticlesSecond and Third ConditionalModifiersNouns, Articles, DeterminersComplex PrepositionsFirst Conditional & Future TensesOther quiz:
Grammar › ViewThey _____ have a lot of money. They go on very exotic holidays every year.
A. must
B. may
C. might
Grammar › View
We never know what might have happened, … the email earlier
A. If he sent
B. If he has sent
C. Had he sent
D. did he send
Modal Verbs › ViewIt expresses an ability to do something. It is a formal way to speak.
A. can
B. able to
C. should
Vocabulary › View
to overcome by superior force, crush; to affect so deeply as to make helpless.
A. overwhelm
B. flexible