I get up six the morning every day, but Sunday morning I get up a little later.A. at, i

I get up six the morning every day, but Sunday morning I get up a little later.
A. at, in, on
B. at, in, in
C. at, on, on
D. in, on, at

(答案→)A. at, in, onB. at, in, inC. at, on, onD. in, on, at解析：句意：我每天早上6点起床。但是，在星期天早上我起的晚一点。在具体的某个时刻用介词at,在具体的某一天的是上午，下午和晚上用介词on,在年月及在上午，下午，晚上用介词in,如in the morning,故选A

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