Question

It was when she was sleeping in her bedroom __________ a thief broke into the ho

It was when she was sleeping in her bedroom __________ a thief broke into the house.
A. which
B. that
C. where
D. than

Answer 1

答案B
句子去掉It was和__________之后，剩下a thief broke into the house when she was sleeping in her bedroom.是一个完整句子，所以原句是强调句型，选B。