试题 试卷
题型：单选题 题类：真题 难易度：普通
— Sorry, I __________. I __________ take care of my little sister because my mother is out.
— No, she ___________ be there. I have just been there.
— Yes, I can.
—I'd love to, but my mother is sick. I _______ look after her at home.
试题篮
