[ Grammar ]
Angela complained that she ___ for hours before Jenny came to help her.
A. was working
B. had worked
C. has been working
D. had been working

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-Ing and Infinitive Verb PatternsGrammar - Verb FormsReflexive Pronouns & Modal VerbsComparisionsAdverbs, Infinitives, Definite ArticleModal VerbsAdverbs of DegreeTenses UsageGrammar : Structural Common ErrorsCompound and Complex, ConditionalsOther quiz:
Modal Verbs › ViewYou _____ ask permission before entering someone’s room.
A. can
B. must
C. might
D. could
Grammar › View
Finish this sentence: “If she had told him about the problem,
A. he would solve it.”
B. he would have solved it.”
C. he would had solved it.”
D. he solved it.”
