—Listen! Who _______ in the next room?
—Sandy. She often _______ there. Her parents want her to be a singer (歌唱家).

A．sings; is sing	B．is singing; sings
C．is singing; sing	D．are singing; sings

科目 英语   题型 单选题   难度 中等

知识点： 主语+系动词+表语