[ Verb Tenses ]
Be careful! You _____ over that beaker of liquid!
A. are knocking
B. will knock
C. knock
D. are going to knock

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Phrasal VerbsElectricity VocabularyIf ClausesTenses - Irregular VerbsDirect Object and Indirect ObjectVerb to haveSubject Verb Agreement; Indefinite PronounsPast Perfect TenseQuantifierGerunds, Infinitives and Modals of PossibilityOther quiz:
Grammar › ViewWhich one is a countable noun?
A. milk
B. butter
C. milk bottle
D. honey
Articles and Prepositions › View
I put the book _____ the bookshelf.
A. on
B. in
C. at
D. to