问题
选择题
| —Where is Sue, do you know? —She ______ the classroom with her classmates. |
| A. cleans B. was cleaning C. is cleaning D. cleaned |
答案
答案：C
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| —Where is Sue, do you know? —She ______ the classroom with her classmates. |
| A. cleans B. was cleaning C. is cleaning D. cleaned |
答案：C