Question

Yue Cuixi ________ one of women pilots to take part in the experiments to make sure the re-entry capsule（返回舱）can land safely.

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A．used to be	B．used to being
C．is used to be	D．was used to be

Answer 1

答案：A
解析：

used to加不定式表示过去常常干某事，现在不再干了。