单选题
An answering machine takes messages ______Sundays.
A、
(A) from
B、
(B) at
C、
(C) in
D、
(D) on
【正确答案】
D
【答案解析】
On is used with days of the week. Choice (A) indicates source or origin. Choices (B) and (C) are used with location.
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