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They are planning to climb _____ highest mountain.
A. a
B. an
C. the
D. no article

Random Topics:
-ed and -ing AdjectivesBare Infinitive and To InfinitiveFuture Tense - will and going toSimple Future - PassiveMixed GrammarMain Idea and Sentence StructureConjunctionsRelative ClausesModals and Semi-ModalsTime Clauses of FutureOther quiz:
Homophones › ViewThe Parrish family could not decide if the weather / whether would stay nice enough to go on the picnic or not.
A. Weather
B. Whether
Grammar › View
Connie was my best friend – we … for hours every day.
A. used to talk
B. would talk
C. Both are correct
Verb + Infinitive or Gerund › ViewWhich is the right form to use: He needs (to study / studying) for his exams.
A. studying
B. to study
C. to studying
D. study
Modal Verbs › View
He _____ come in here, we are not doing anything important.
A. should
B. will be able to
C. can
D. must
