Topics: Auxiliary Verbs, if, unless and Modal
They __ been waiting for the bus for an hour.
A. will
B. has
C. is
D. have
Select your answer:

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Vocabulary and PhrasesSimple Present VS Present ContinuousActive Voice-Present tensePerfect ModalsQuantifiers, Countable and Uncountable NounsQuestion tag and + - AgreementPresent Perfect or Past Simplemust/shouldModals and Present TensesConditional Sentence Type 2Other quiz:
Grammar › ViewThe report notes that forty percent of lawyers _________ the profession are women
A. entering
B. joining
C. joining in
D. joining up
IELTS Grammar › View
This is ___ painting in the museum.
A. more beautiful
B. as beautiful as
C. most beautifully
D. the most beautiful
