31．Mr Li asked a difficult question，but the little boy could _____ the answer．

A．work out       B．Come up with．  C．catch up with．       D．look out

30．In spring we can see_____ birds in the sky． 

A．million of        B．many millions       C．millions of         D．two millions of 

29．There_____ a lot of farms here，but now there are so many tall building．

A．use to have      B．used to be．          C．get used to be         D．didn’t use to be 

28．The dictionary_____ be Mary’s．Look，her name is on it．

A．is                 B．might be               C．must be               D．can’t be

27．Few of them hurt themselves in the accident last night,_____?

A．don’t they     B．didn’t they       C．did they                    D．do they

26．-My father bought me a new MP4 player, but I don’t know_____

A．what to use     B．which one to use  C．how to use it         D．when to use  

25．_____light bulbs _____by Edison in l 892?

A．Was, invented   B．Did，invented   C．Are, invented         D．Were．invented

24．-_____today! 

-Yes．Shall we have a picnic in the open air?

A．What fine weather is           B．How fine weather it is

C．What a fine weather it is       D．How fine the weather is

23．I’m sure you _____the ticket in the office．Hurry to get it!

A．will forget    B．have forgotten  C．had left         D．have left

22．What would you do if you cut yourself_____ accident．

A．with              B．at              C．by                  D．in