Without air, the night time（）very cold and the days burning hot.

单项选择题When we reached the pier, the ferry had not arrived yet; so we（）

A. needed not to hurry
B. needn't have hurried
C. didn' t need to hurry
D. had not needed to hurry

单项选择题A business letter should be written in a formal style（）in a personal one.

A. better than
B. rather than
C. other than
D. less than