题目内容
Dorothy was always speaking highly of her role in the play, ____, of course, made the others unhappy.
| A．who | B．which |
| C．this | D．what |
B
B。of course 为插入语，若将项其去掉，则答案显然是B。
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B。of course 为插入语，若将项其去掉，则答案显然是B。