问题
选择题
I didn't come to school yesterday I had to look after my grandmother at home. [ ]
A. because
B. because of
C. since
答案
答案：A
搜题请搜索小程序“爱下问搜题”
I didn't come to school yesterday I had to look after my grandmother at home. [ ]
A. because
B. because of
C. since
答案：A