No one can stop him, _________ the boy is determined to do something．

A．even if

B．once

C．now that

D．although

Only after the woman had her own child _________ how difficult it was to be a mother．

A．did she realize

B．she had realized

C．she realized

D．had she realized

You may _________ your teachers for help when you have problems．

A．turn up

B．turn down

C．turn to

D．turn off

No one can prevent the plans _________ out．

A．to be carried

B．from carrying

C．not to carry

D．from being carried

One of the men held the view _________ the book said was right．

A．that

B．what that

C．that what

D．whether

As the busines woman in Norton, she made _________ her duty to look after all the other people’s affairs in that town．

A．this

B．that

C．one

D．it

Oh, I’m not feeling well in the stomach．I _________ so much fried chicken just now．

A．shouldn’t eat

B．mustn’t have eaten

C．shouldn’t have eaten

D．mustn’t eat

The naughty boy _________ to me that the hen that _________ there just now had _________ two eggs the day before．

A．laid; laid; laid

B．lied; lay; laid

C．laid; lay; lain

D．lied; laid; lain

_________ is even more important is _________　_________ the earth cooled down, water began to appear on its surface．

A．When; that; when

B．What; whether; as

C．What; that; as

D．lt; whether; as

Going on a trip into _________ space must be quite _________ exciting experience．

A．/;the

B．the; the

C．the; an

D．/; an