If a student has a problem with classroom work，he or she should______.

If a boy or a girl has grown up in a home with sharing tasks and decisions，he or she will probably______.

Either he or I ______to the airport.

How much one enjoys himself travelling depends largely on_____he goes with，whether his friends or relatives．

______ it or not , his discovery has created a stir in scientific circles.

The machine he originated and perfected has no modern _____ or ancient prototype.

Virginius would feel more or less guilty when he______.

Virginius would feel more or less guilty when he _____.

It is generally considered unwise to give a child___( )_____ he or she wants.

He promised ______ his old friend during his stay in Tianjin.

He cut his hand________.

After the cameraman had taken three or four photographs of the soldier ants, he found they had ______ all over his feet.