[ Grammar ]
what were they doing this time yesterday?
they _________( work) on the computer.
A. are working
B. is working
C. was working
D. were working
Select your answer:
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Conjunctions & PrepositionsModals with Perfect InfinitiveAdjectives (-ed / -ing)Degree of ComparisonPassive with ModalsIrregular AdjectivesGrammar - Nouns, Verbs, and AdjectivesAuxiliaries VerbNarrative Tenses & ConditionalsOther quiz:
Reported Speech and Tenses › ViewIdentify the correct form of the verb in present perfect: I __________ (see) that movie three times.
A. saw
B. have seen
C. see
Prepositions › View
That man is well-known _______ his invention.
A. in
B. about
C. for
D. on