问题
选择题
| The policeman ______ the building ______ a thief at the moment. |
A．searching; for B．searches; for C．search; for D．is searching; for |
答案
答案：D
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| The policeman ______ the building ______ a thief at the moment. |
A．searching; for B．searches; for C．search; for D．is searching; for |
答案：D