[ Preposition ]
We had to wait _____ a queue for an hour to check in at the airport.
A. in
B. on
C. at

Random Topics:
First ConditionalAdjective ClauseSimple Compound and Complex SentencesGrammar Pronoun and Singular Plural Noun1st ConditionalModals of Necessity and SuggestionConjunctivesPassive Voice - Present ContinuousNouns FormationDemonstrative PronounOther quiz:
Grammar › ViewShe____________ to the dentist twice a year.
A. go
B. went
C. goes
D. gone
Grammar › View
Eight planets rotate around ___ sun in ___ solar system.
A. a , a
B. the , the
C. the , a
Each of the cars in the parking lot __________ a parking permit.
A. need
B. needs
C. have needed
D. were needing
Grammar › View
She ___ these days.
A. hardly ever visits us
B. visits hardly ever us
C. visits us hardly ever
D. visit hardly us
