问题
选择题
The computer 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
答案
答案：D
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The computer 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
答案：D