Select your answer:
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Present TenseGerund, Participle, Infinitive, or AppositiveAdjectives with -ED and -INGPhrase and ClauseModal Auxiliaries and Similar ExpressionsPassive ModalsModals and Modal PerfectsGrammar SuffixesPresent & Past TensesDependent ClausesOther quiz:
Simple Compound and Complex Sentences › ViewI like tulips, and I like roses. The word “and” is a…
A. subordinating conjunction
B. subject
C. coordinating conjunction
Grammar › View
Rob _____ a problem while he _____ the surveillance system.
A. discover / checked
B. discovered / was checking
C. was discovering / checked