______ on an airplane before, the old lady felt very nervous.A、Never having been

游客2024-07-09  9

问题 ______ on an airplane before, the old lady felt very nervous.

选项 A、Never having been
B、Having never been
C、Never to be
D、Never being

答案 A

解析 分词短语作状语,短语中的动词先于主句的谓语动词发生,所以用完成时。注意否定词never的位置。
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