[問題]2000年1月 Q27 [structure]

[a16327]

27. The people native to the northwest coast of North American have long
be known for wood carvings of stunning beauty and extraordinary quality.

答案是B, 但不知如何改才是正確

[hsyeng]

been?

[ministar]

前面已經有have
所以用完成式 have been known