[ Grammar ]
Human food may be very harmful for some animals, —- is why they won’t let us feed the animals at the zoo.
A. which
B. whom
C. when
D. why
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Simple TensesPresent ContinuousNoun Verb AgreementModal Verbs and Contrastive ConjunctionsVerbal and Appositive PhrasesConditional 0Active & Passive VoiceArticle the or zero article (-)IntermediateGrammar of Conjunctions and PrepotitionsOther quiz:
Vocabulary › ViewIn Vietnam, Tet is the grandest and most important _______ in the year.
A. season
B. tradition
C. vision
D. occasion
Past Tenses › View
Mary ___ wearing her glasses, so she didn’t notice the man that mugged her.
A. wasn’t wearing
B. didn’t wear
C. hadn’t worn
D. hadn’t been wearing
Grammar › ViewDo you enjoy __________ board games?
A. play
B. to play
C. playing
D. played
Articles and Pronouns › View
What is a pronoun?
A. A word that takes the place of a noun.
B. A word that takes the place of verbs.
C. A word that takes the place of adjectives.
D. A word that takes the place of adverbs.