英语学位的相关语法知识90 We were not surprised at ______for hehad worke

英语学位的相关语法知识
90 We were not surprised at ______for hehad worked so hard,A what has he achieved B that what he had achieved C whathe had chieved D that he had achieved
97 Air,or ______is called atmosphere,surrounds the whole earth.A it B that C which D what 详细解释下句子成分分析
99______was pointed above,this substancecan be used as a substitute A it B that C what D as答案是D