[ Grammar ]
The astronaut who first walked on the Moon was Neil Armstrong.
A. essential
B. nonessential
Select your answer:
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Prepositions › ViewIt is very nice______ you to take so much trouble.
A. of
B. to
C. for
D. from
Grammar › View
Everything is going according to schedule, ______?
A. does it
B. isn’t it
C. do they
D. aren’t they