If we don’t study well, we can’t ______ the advance of modern science．

[　　]

A．catch up　　B．keep on　　C．keep up　　D．keep up with

I don't allow _____ in the classroom．

[　　]

A．to smoke　　　B．smoking　　　C．smoke　　　D．our smoking

Thank you very much for giving me ______ information ______ that factory．

[　　]

A．much…on　　　B．a lot of…of

C．the…of　　　 D．many…on

Our teacher told us that we could make quick progress ______ English ______ reading every morning．

[　　]

A．an…by　　　　B．in…by

C．by…by　　　　D．in…in

This is the first time that a woman scientist has been awarded in ______ history．

[　　]

A．the　　　B．our　　　C．us　　　D．/

We cannot ______ the past, but we can obtain knowledge of the past by reading．

[　　]

A．look back　　　　 B．go back to 

C．come back to　　　D．go back

The work is poorly done．You ______ it better．

[　　]

A．should do

B．ought have done

C．must have done

D．should have done

　　What do you think made Mary so upset?

　　________.

[　　]

A．As she lost her purse

B．Lost her purse

C．Losing her purse

D．Because of losing her purse

I have two rooms upstairs, ________ has been used for more than a year.

[　　]

　　I must apologize for ________ it ahead of time.

　　That's all right.

[　　]