[ Phrasal Verb ]
Zhi Ning ___singing even after the music had stopped.
A. keep on
B. keep in
C. keep up
D. keep out

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Phrases and TensesGrammar : Must (Necessity)Present Simple and Continuous TensePast PerfectVerbs: Action, Linking, and HelpingFrequencyQuantifiers / Prepositions of Time and Comparative AdjectivesFirst and Second ConditionalAction, Helping & Linking VerbsSentence CompletionOther quiz:
Grammar › ViewA Has Matt got up yet? B I don’t know. He might get up / have got up already.
A. get up
B. have got up
Future Tenses › View
Don’t ask me for the results tomorrow.
A. I’ll still be doing the research.
B. I will have done the research.
C. I will do the research.