4f:|2w(T1U)r+E3p;O;\;b —Who is singing in the next room ?5N8I+l,b/b:o,F9R5E3M9s0@
— _________ must be Mary .5N8I+l,b/b:o,F9R5E3M9s0@
A. She5N8I+l,b/b:o,F9R5E3M9s0@
B. This5N8I+l,b/b:o,F9R5E3M9s0@
C. It5N8I+l,b/b:o,F9R5E3M9s0@
D. He5N8I+l,b/b:o,F9R5E3M9s0@