The announcement that they _________________(成功地研制出) a new kind of boiling steel

游客2024-03-06 1

问题 The announcement that they _________________(成功地研制出) a new kind of boiling steel greatly excited us.

选项

答案 had succeeded in developing

解析本题的考查点一是短语“成功”的表达方式是succeeded in doing，“研制”用动词develop；考点二是时态问题，本句的谓语excited 是一般过去时，因此从句中应用过去完成时。

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