问题
选择题
| The policeman saw a thief _____ a girl's money on the bus and caught him at once. |
A. stole B. stolen C. to steal D. stealing |
答案
答案：D
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| The policeman saw a thief _____ a girl's money on the bus and caught him at once. |
A. stole B. stolen C. to steal D. stealing |
答案：D