It was only after he had read the papers ________ Mr.Gross realized the task before him was extremely difficult to complete. (2013·大纲全国,30)
A.when | B.that |
C.which | D.what |
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It was only after he had read the papers ________ Mr.Gross realized the task before him was extremely difficult to complete. (2013·大纲全国,30)
A.when | B.that |
C.which | D.what |