7.———ballet dancers learn five basic positions for the arms and feet.
(A)All of ; (B)Of every; (C)All; (D)Every.
答案是A,我的问题是A和C用的时候有什么区别?
27.The people native to the northwest coast of North America have long be known for wood carvings of stunning beauty and extraordinary quality.
答案是A,可是偶找不出A错在什么地方,C-be known不是错的吗?不应该是have long been known吗?
请各位NN赐教~~谢过先!!!!
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我认为第一题选C,all of 后面要有冠词the,All后则不要,我想这是二者区别吧。
第二题选B。have后不会是动词原形Be。
请指教。
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