[ Grammar ]
A baby who is _____ crying long enough will eventually stop.
A. leave
B. to leave
C. leaving
D. left

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Past Perfect or Past Perfect ContinuousClauses and Conjunction-ing / InfinitiveVerbal and Appositive PhrasesFuture Tenses, Conditionals and ProfessionsApostrophe GrammarVerb + PrepositionModal Verbs and Contrastive ConjunctionsFigure of SpeechPresent Perfect Simple vs ContinuousOther quiz:
Modal Verbs › ViewWhose is this bag? – I don’t know, but it ______ belong to Yuta.
A. can
B. may
C. must
D. will
Tenses › View
Write the form of the verb specified in parentheses. Scientists (measure / present perfect) winds of more than 150 miles an hour during severe thunderstorms.
A. measure
B. present perfect