[ 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 › ViewIt’s a long time since we last went to the cinema.
A. We have gone to the cinema for a long time.
B. We haven’t gone to the cinema for a long time.
C. We don’t go to the cinema as we used to.
D. We haven’t gone to the cinema for a long time ago.
Grammar › View
Mr. Hawk told me that he would give me his answer the ___________ day
A. previous
B. following
C. before
D. last
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
