[ Adjective / Noun + to Infinitive ]
His ability ____ mathematics in a short time is wholly admirable.
A. not to work out
B. work out
C. to work out
D. working out
Select your answer:

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Definite pronouns (Subject, Object, Reflexive)Conjunctions, Interjections and DeterminersTenses: Present simple, Past Simple, Future SimpleNoun QuantifiersCan vs be able toPronouns/ Present TenseFuture or PastBe going to / WillQuantifiers and ArticlesVerb Moods and Vague PronounsOther quiz:
Quantifiers › ViewI know ___ Los Andes students who actually like the university.
A. very little
B. not much
C. not many
D. very few
Grammar › View
Which is the correct verb to use in this sentence? My brown chicken (lay/lie) spotted eggs.
A. lays
B. lies
