问题
选择题
Having checked the doors were closed, and______all the lights were off,the boy opened the door
to his bedroom.[ ]
A. why
B. that
C. when
D. where
答案
答案:B
Having checked the doors were closed, and______all the lights were off,the boy opened the door
to his bedroom.[ ]
A. why
B. that
C. when
D. where
答案:B