题文
It was only after he had read the papers ______ Mr. Gross realized the task before him was extremely difficult to complete. (2013 .全国新课标Ⅱ)
| 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 .全国新课标Ⅱ)
| A．when |
| B．that |
| C．which |
| D．what |
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