It is necessary that an efficient worker （） his work on time.

单项选择题I know this is the right train. The ticket agent said it would be on （）

A. Platform Three
B. the Platform Three
C. Third Platform
D. The Three Platform

单项选择题With one leg broken in that car accident, he cannot even walk, （） run.

A. let alone
B. that’s to say
C. not to speak
D. not to mention