单项选择题
A:Can I do anything for you？ B:（）
A.No. You can't do anything for me. B.No,it's alright. I can manage myself. C.Never mind D.It's my pleasure.
单项选择题 If you had taken the medicine yesterday, you（）much better now.
单项选择题 A few of（）are planning to drive to Beijing during the spring break.
单项选择题 The cold and dry climate of Antarctica（）it one of the toughest places on Earth to live.
