---Isyourfatherstillanengineer?---________.A.Yes,hewasB.Hedidn'tuseto

发布时间：2020-08-06 18:30:32

---Is your father still an engineer?---________.A.Yes, he wasB.He didn't use toC.Yes, but he used toD.No, but he used to be

网友回答

D解析used to be an engineer省略，应保留be)，意为“过去是”，暗含现在已经不再是的了．
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