问题
选择题
—Where is Millie?
—She ______ a trip in her room. [ ]
A. plan
B. plans
C. is plan
D. is planning
答案
答案：D
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—Where is Millie?
—She ______ a trip in her room. [ ]
A. plan
B. plans
C. is plan
D. is planning
答案：D