[ Grammar ]
You use these expressions: WHILE / WHEN with:
A. Past Simple and Past Continuous
B. Past Simple and Past Perfect
C. Past Perfect and Present Perfect

Random Topics:
Gerund & ParticipleSynonymsModals for ObligationSubjective and Objective PronounPronouns and Subject Verb AgreementNouns as AdjectivesGoing To Be and WillSimple Present and Present ContinuousAdjective vs AdverbPassive Voice - Present TensesOther quiz:
Grammar › ViewWhat is NOT a connotation of mothers
A. Nurture
B. Caring
C. Trust
Grammar › View
Change the active sentence to passive.
Everyone must switch off their cell phones.
A. Cell phones must switched off.
B. Cell phones switched off.
C. Cell phones must be switched off (by everyone).
D. Switch off everyone’s cell phones.
Grammar › ViewI ________ (never/ be) to Canada.
A. have never been
B. never has been
C. was never
D. never was
Verb & Grammar › View
Which word is an adjective in this sentence: “The blue car is fast”?
A. blue
B. car
