[ 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:
Prepositions › ViewShe’s been working ___ nine this morning.
a. for
b. since
Subject-Verb Agreement › View
Your pants _____ on fire, for some reason.
A. were
B. was
Grammar › ViewLine 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
