[ Grammar ]
You must be careful when using those ___________ because they are very sharp.
A. knife
B. knifes
C. knive
D. knives

Random Topics:
Vocabulary and IdiomsGrammar and PunctuationKinds of SentencesDefinite & Indefinite Pronoun & ConditionalsVerbs and TensesGerundTime PhrasesComparative AdverbsGrammar - Sentence StructurePast Narrative TensesOther quiz:
Tenses › ViewShe _____ (read) a book right now.
A. reads
B. is reading
C. has read
Vocabulary › View
A person that studies.
A. Teacher
B. Teach
C. Study
D. Student
