[ Tenses ]
They heard a noise _____ they were learning Chemistry.
A. when
B. while
C. before
D. after

Random Topics:
Vocabulary and IdiomsInterrogative Pronouns & AdverbsContrastive ConjunctionsSimple Present Tense with Adverb of FrequencyThere is or There areGrammar - to be, possessive, have gotAdjective ClauseAdjectives, Adverbs, and PrepositionsIndefinite and Reflexive PronounsGrammar: AgreementOther quiz:
Future Tenses › ViewLook that those black clouds! It __________.
A. is going to rain
B. will rain
C. will be raining
D. are going to rain
Preposition of Time › View
We have toasts for breakfast _____ the morning.
A. in
B. on
C. at
Grammar › ViewHe bitterly resents ______ like a child.
A. treating
B. treat
C. to be treated
D. being treated
Present Simple or Present Continuous › View
I ___ the grass every week.
A. cut
B. ‘m cutting
