[ Grammar ]
Which sentence is correct?
A. The concrete mixture must be stirred thoroughly.
B. The concrete mixture must be stir thoroughly.
C. The concrete mixture must be stirring thoroughly.
D. The concrete mixture must stirring thoroughly.
Select your answer:

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Indefinite PronounsGrammar - must & have toComparatives and ConjunctionsSynonymsSimple Past and Past Progressive Tenses“Put” Phrasal VerbRequest with Modal VerbsPast or Present Verb TenseVocabularyGerundsOther quiz:
Verb Tenses › ViewCreate a question in past: You (to see) the movie?
A. Did you see the movie?
B. Have you seen the movie?
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Subject Verb Agreement › View
The team ___ arguing among themselves.
A. is
B. are
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