[ Preposition ]
My father will retire from service —– a year.
A. of
B. on
C. in
D. by

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A. do/do
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If there __________ (be) an emergency, who will you call?
A. will be
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A. Next
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Who helps you fix your car when it’s broken?
A. Mechanic
B. Engineer
C. Carpenter
D. Plumber