200+ câu trắc nghiệm Câu chủ động và câu bị động có đáp án (Phần 8)

An electrical fault could have caused the fire.

15/20

An electrical fault could have caused the fire.

An electrical fault could have been caused by the fire.

An electrical fault could have caused the fire

The fire could have been caused by an electrical fault.

The fire could have caused an electrical fault.

Giải thích

Chọn đáp án C