Mary dropped in ____ Mr Smith, but he wasn" t at home, so she went to drop in _

题型：不详难度：来源：

Mary dropped in ____ Mr Smith, but he wasn" t at home, so she went to drop in ____ Mr Smith"s office.

A．on, on

B．at, at

C．on. at

D．at. on

答案

解析

略

举一反三

The teacher is not only strict ____ his pupils but also strict ____ his own work.

A．with, with

B．in,in

C．in, with

D．with, in

题型：不详难度：| 查看答案

His grandfather died ____ the wound that the enemy soldier had given him .and then his grand-
mother died ____ hungry and cold.

A．from,of

B．of,from

C．from,from

D．of.of

题型：不详难度：| 查看答案

If you run ____ two hares you will catch neither.

A．into

B．after

C．off

D．out of

题型：不详难度：| 查看答案

This is a common mistake ____ students.

A．between

B．over

C．among

D．about

题型：不详难度：| 查看答案

My father began to work ____ a bus driver when he was twenty years old.

A．for

B．to

C．at

D．as

题型：不详难度：| 查看答案