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
—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