[ Tenses ]
A: Whose is this necklace?
B: I don’t know. I ___ it while I ___ the carpet.
A. found-was cleaning
B. have found-was cleaning
C. had found-cleaned
D. found-had cleaned

Random Topics:
PunctuationsUnderstanding Product Packaging and TensesGive, do and makeSentence Transformationmust/shouldCountable and UncountableSimple and Compound SentencesComparatives, Superlatives & EquativesPrepositions & Modal VerbsGrammar - help/have/let/makeOther quiz:
Grammar › Viewafter miss lilian _______her work,she went home straight way
A. finished
B. had finished
C. has finished
D. have finished
Tenses › View
Last week, they ________ happily at the sea with their family.
A. swim
B. swam
C. swims
D. swimming
