题目内容
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.
- A.used to be
- B.used to being
- C.is used to be
- D.was used to be
A
used to加不定式表示过去常常干某事,现在不再干了。
used to加不定式表示过去常常干某事,现在不再干了。
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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.[ ]
A .used to be |
B .used to being |
C .is used to be |
D .was used to be |