从所给的四个选项中选择最佳答案

I ________ thank you too much for your timely help．　　　

[　　]

A．shouldn't　　　B．can　　　C．can't　　　D．must

从所给的四个选项中选择最佳答案

While ________ the street, he ________ by a car passing by．　　　

[　　]

A．crossed．knocked down　　　B．across, was knocked

C．crossing, was knocked　　　　D．crossing, was knocked down

We must pay attention to ________ the teacher said in class．

[　　]

A． which 　　　B． when 　　　C． What　　　 D． how

I've made ________ a habit ________ morning exercises in the early morning．

[　　]

A． it…doing 　　　B． it…to do　　　C． ×…to do 　　　D． ×…doing

—Did you go back to see your parents last Sunday?

—No, but I _______ so． 　　　　　　

[　　]

A． should have done　　　B． must have done

C． ought to do 　　　　　D． need do

I thought you _____ like something to read, so I have brought you some magazines． 　　　

[　　]

A． may　　　B． might　　　C． could 　　　D． must

—Look, someone is coming． It may be the headmaster．

—It _______ be him． He went to Shanghai yesterday． 　　　

[　　]

A． may not　　　 B． needn't

C． shouldn't　　　D． can't

If he knew the result of the examination, he _______ tell me． 　　　

[　　]

A． can　　　B． will　　　C． may　　　D． would

There're many mistakes in your homework, you ________ write so carelessly． 

[　　]

A． can't　　　 B． won't　　　C． ought not to 　　　D． not ought to

He was badly hurt, so you _______ move him．

[　　]

A． needn't 　　　B． won't 　　　C． mustn't　　　D． can't