It was ( ) who helped to send the injured in that accident to the hospital.这里填us还是we请顺便讲一下原因

It was ( ) who helped to send the injured in that accident to the hospital.这里填us还是we
请顺便讲一下原因

这里填WE,因为这是一个强调句,强调句子的主语,而宾格US不可心充当主语.

we 但也可以用us 强调句中若强调人称代词可以用宾格

we