问题
选择题
_______ a cold morning, I opened the window and was glad to find that It was snowing
outside.
A．By
B． In
C．At
D．On
答案
答案：D
搜题请搜索小程序“爱下问搜题”
_______ a cold morning, I opened the window and was glad to find that It was snowing
outside.
A．By
B． In
C．At
D．On
答案：D
