[ 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:
Hope, Thank, Modal Verbs › ViewChoose the correct modal verb: “You ___ not smoke in this area.”
A. could
B. should
C. would
D. must
Grammar › View
Choose the correct pronoun for the sentence: “Tom and ____ are going to the party.”
A. Me
B. I
C. Myself
D. Mine
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
