They felt that something like this was bound to happen. He had been risking his life for years because of his theories, although they had (83) been proved.

They felt that something like this was bound to happen. He had been risking his life for years because of his theories, although they had (83) ……………………. been proved.

Trả lời

Đáp án: never / not

Câu hỏi cùng chủ đề

Xem tất cả