[ Grammar ]
Which of these word is a noun?
A. sing
B. cat

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Grammar › ViewI enjoy _______ my English homework, as it is a great opportunity to memorise everything!
A. do
B. to do
C. doing
Vocabulary › View
What part of speech is the word “ambiguous”?
A. Noun
B. Verb
C. Adjective
D. Adverb