[ Gerund vs Infinitive ]
It’s not easy … sign language. It requires lots of practice.
A. learn
B. to learn

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Grammar - PunctuationSentence Fragments and Complete SentencesAdverbial Clause of ConcessionTOEFL GrammarVerb Present Simple TenseIndefinite PronounsEnglish MorphosyntaxPronouns and AdverbsPassive SentencesFuture Tense and ConditionalsOther quiz:
Describing Words › ViewThe yellow car has …….. black tires.
A. four
B. twelve
Grammar › View
She hasn’t come home ………………
A. Still
B. Already
C. Yet
D. Till
E. None of the above