She is playing____the computer now.A.on B.at C.inPlease choose the best answer.Thanks.

She is she is is she she is she is fine.-----------is-----------? ( )(she) mother is calling ( ) (she). Is she ____?,she is loud.She is singing. She is your mother' mothre.She is she is lucy and she is lily Is she your friend,()? Yes,she is. ( )is she?she is a teacher. She is very well.= She is ------ --------- --------- She is rich ( ) she is unhappy （ ）is she（ She is very friendly. 什么is she?She is very kind. what is she what she is 区别? ____ is she?She is very kind. is she hungry yes,she is .