问题
选择题
The little girl felt upset _________ her pet dog died.
A．why
B．because of
C．because
D．what
答案
答案：C
表示原因，后跟从句用because，故本题选C。
搜题请搜索小程序“爱下问搜题”
The little girl felt upset _________ her pet dog died.
A．why
B．because of
C．because
D．what
答案：C
表示原因，后跟从句用because，故本题选C。
