问题
选择题
| Sam often ____ his room on Sundays. Look! He ______it now. |
A. cleans; cleans B. cleans; is cleaning C. is cleaning; cleans D. is cleaning; is cleaning |
答案
答案：B
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| Sam often ____ his room on Sundays. Look! He ______it now. |
A. cleans; cleans B. cleans; is cleaning C. is cleaning; cleans D. is cleaning; is cleaning |
答案：B