My little cat sleeps the day but night he begins to work.A. at atB. on inC. on atD. du

问题补充：

My little cat sleeps the day, but night he begins to work.

A. at, at

B. on, in

C. on, at

D. during, at

答案：

A. at, at

B. on, in

C. on, at

(答案→)D. during, at

解析：本题考查的是in the day 或during theday 以及at night ，故选D