[ Grammar ]
Rob _____ a problem while he _____ the surveillance system.
A. discover / checked
B. discovered / was checking
C. was discovering / checked
Select your answer:
Random Topics:
Sentence CompletionAdverb Identification, Function, and FormationPresent simple & ContinuousPrepositions & Modal VerbsFirst ConditionalNoun PhrasesModals and ConditionalsVerbs: Will & Going toAction VerbGrammar - may & mightOther quiz:
Modals › ViewI ___ be able to help you with that next week.
A. may
B. would
C. can
D. might
Present Tenses › View
Yes, I …………….. what you mean, sir.
A. am seeing
B. have been seeing
C. see
D. seeing