问题描述:
The idea for the new machine came to Mr.Baker( )to his invention.
A.while he was devoted
B.while devoting
C.while devoting himself
D.while devoted
求讲解.
问题补充:如果我把题目改成这样呢?该选哪项?
Mr.Baker came up with a idea for the new machine,( )to his invention.
A.while he was devoted
B.while devoting
C.while devoting himself
D.while devoted
求讲解.
问题补充:如果我把题目改成这样呢?该选哪项?
Mr.Baker came up with a idea for the new machine,( )to his invention.
问题解答:
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