题文
It is _____ he often fails in exams ____ makes his parents worried about him.
| A．what; that | B．that; what | C．that; that | D．不填；that |
推荐试卷
It is _____ he often fails in exams ____ makes his parents worried about him.
| A．what; that | B．that; what | C．that; that | D．不填；that |
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