Inthelastfewmonths，theteachers-优题课

In the last few months， the teachers have given lessons____the Internet as webcasts（主播）．（　　）

A．

for

B．

C．

D．

科目英语题型选择题难度中等

知识点：常用介词的辨析

The little boy is saving every coin he can buy his mother a present on Mother's Day．（　　）

even if

so that

as soon as

Look at the sign"No smoking"．You smoke in public．（　　）

mustn't

needn't

wouldn't

As students，we have to follow the school rules and come to school ．（　　）

next time

on time

in time

My father is the person influenced me most in my childhood．（　　）

who

when

which

Guizhou Huangguoshu Waterfall．Thousands of visitors come to visit it every year．（　　）