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

A. at; on

B. on; in

C. in; in

D. at; in

I usually get up ________six-twenty in the morning．

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