问题
选择题
—Where is
Selina?
—Listen! Selina ______ in the next room now. [ ]
A. sings
B. singing
C. sing
D. is singing
答案
答案：D
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—Where is Selina?
—Listen! Selina ______ in the next room now. [ ]
A. sings
B. singing
C. sing
D. is singing
答案：D