Question

She ........ playing the piano when I entered the room.
Fill in the blank with appropriate forms of be, have and do.​

Answer 1

Answer:

She have been playing the piano when I entered the room.

Answer 2

Answer:

is

Explanation:

Is is the answer of this question because after dase a word comes playing.

and playing is present continuous's word.

and the helping verb of present continuous tense is=is