单项选择题

It is no easy job to be a teacher. One has to be extremely patient ______ the students.

A．at
B．about
C．on
D．with

<上一题目录下一题>

热门试题

单项选择题

The USA is composed of 50 states, ______ are separated from the others by land or water.

A．two of these
B．of whom two
C．two of which
D．two of that

单项选择题

______ he realized it was too late to return home.

A．No sooner it grew dark when
B．It was not until dark that
C．Scarcely it grew dark than
D．While it grew dark that

相关试题