He had been reading _____ 2 hours when his friend ... | GrammarQuiz.Net

[ Grammar ]

He had been reading _____ 2 hours when his friend came.

A. for

B. on

C. since

Select your answer:

Random Topics:

Question Tags Verb Tenses Grammar and Syntax Simple Present and Present Continuous Interrogative Pronouns & Adverbs Asking & Giving Attention would should could If Clauses Modals and Phrases

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