[ Adjective & Adverb ]
When _______grapes are ripe, they must be harvested.
A. a
B. an
C. the

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Conjunction › ViewWhy _____ he want to learn English? – Because he wants to talk to foreign friends.
A. do
B. does
C. is
D. are
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There are …………… exercises in GrammarBank.
A. many
B. much
C. a lot of/ lots of