[ Tenses ]
Choose the correct sentence:
A. They had been waiting for the bus since an hour.
B. They have been waiting for the bus since an hour.
C. They were waiting for the bus since an hour.
D. They have been waiting for the bus for an hour.

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Time and CalendarSimple Past/Past ProgressiveNouns & PronounsDefinite and Zero ArticleArticles and PronounsNoun QuantifiersRelative Clauses and UsageSimple Present Negative and QuestionBecause of & Inspite ofGerunds & Infinitives + VocabularyOther quiz:
Adjective & Adverbs › ViewA new study show that brain circuitry makes some people ——– susceptible to becoming addicts when compared with others.
A. as
B. more
C. the most
D. such
E. enough
Indefinite and Reflexive Pronouns › View
The body can adjust ______ to changes in atmosphere.
A. himself
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Grammar and Vocabulary › ViewThe _____________ had spun a web outside my window.
A. bee
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D. spider
Grammar › View
________ turn is it to do the laundry?
A. Who’s
B. Whose
