It was only after he had read the papers _____Mr. Gross realized the task before him was extremely difficult to complete.
A.when | B.that | C.which | D.what |
相关知识点
推荐试卷
It was only after he had read the papers _____Mr. Gross realized the task before him was extremely difficult to complete.
A.when | B.that | C.which | D.what |
试题篮
()