[ Grammar ]
Only recently ______ popular all over the country.
A. have indoor climbing gyms become
B. in becoming indoor climbing gyms
C. indoor climbing gyms have become
D. indoor climbing gyms

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A. to add
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I will clean the dining room but I … clean the kitchen.
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Articles › View
Did you enjoy ______ concert last night?
A. a
B. an
C. the
D. X
