每天练习 英语练习

We can see a lot of people doing morning exercises in the park even ______ a cold morning.

A. on　　  B. in      C. at　　　  D. of

昨日习题答案：

I've never met anyone with（ B.such a sweet ）voice.

句意：我从来没有听过如此甜美的声音。