[ Articles and Determiners ]
They have arrived ____ hour ago.
A. a
B. an
C. the
D. what

Random Topics:
Simple Past vs Past Continuous TenseWh-QuestionPrepositions and AdverbsConditional SentenceCommas and Subordinating ConjunctionsModals AuxiliaryPreposition & GerundConditional TypesQuantifiers & Modal VerbsAdverb ClauseOther quiz:
Grammar › ViewMisha is tired. He (to want) to go home now.
A. wants
B. is wanting
C. are wanting
D. does want
Science › View
The science dealing with the occurrence and distribution of underground water.
A. Meteorology
B. Geomorphology
C. Hydrogeology
D. Sedimentology
Line up for specials.
A. statement
B. question
C. command
D. exclamation
Modal Verbs › View
I think there ______ be a mistake in your tax return. You should check it.
A. can
B. will
C. won’t
D. might
