问题
选择题
Tom _____ his book on the desk 3 minutes ago. But now he can't find it. [ ]
A. putted
B. put
C. puts
D. is putting
答案
答案：B
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Tom _____ his book on the desk 3 minutes ago. But now he can't find it. [ ]
A. putted
B. put
C. puts
D. is putting
答案：B