It was in this house he heard some strange sounds.A. thatB. whereC. whichD. who

问题补充：

It was in this house he heard some strange sounds.

A. that

B. where

C. which

D. who

答案：

(答案→)A. that

B. where

C. which

D. who

解析：考查强调句： it is /was+被强调部分+that/who+…，判断方法是去掉it is /was that/who句子不缺成分，即为强调句型。这句话如果改成简单句是he heard some strange sounds in this house.是完整额句子，所以是强调句，句意：就是在这个房子他听见一些奇怪的声音。选A。