22. The computer programs are a puzzle to me. The more I think of them, the more questions

发布时间：2020-08-16 06:18:49


22. The puter programs are a puzzle to me. The more I think of them, the more questions I think of    .
A. ask
B. asked
C. being asked
D. to ask

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A. ask
B. asked
C. being asked
(答案→)D. to ask
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