单项选择题
--Could you give me a lift home, please--Sorry（）
A. I have visited my sister B. I visited my sister C. I am visiting my sister D. I visit my sister
单项选择题 Perhaps you（）leave now. Your friend may be waiting for you outside.
单项选择题 Just think, in（）three months it'll be summer again.
单项选择题 Either of the children（）quite capable of looking after the baby.
