20、Every       second day he went to the library for some books to read. But after a page or two, he would put the book down and pick up      new one.

A．the, a        B．不填, the         C．the, a        D．不填, a

19、Keep your car in good          and it will drive long.

A．instruction              B．position     C．condition  D．situation

18、--- Lucy doesn’t mind lending you her dictionary.

--- She         . I’ve already borrowed one.

A．can’t        B．mustn’t     C．needn’t     D．shouldn’t

17、--- If the traffic hadn’t been so heavy, I could have been back by 6 o’clock.

--- What a pity! Tina          here to see you.

A．is             B．was          C．would be         D．has been

16、All her energies are         upon children and she seems to have little time for anything else.

A．guided      B．aimed       C．directed    D．focused

15、In India more than one hundred languages are spoken,        which only fourteen are recognized as official.

A．of            B．in             C．with         D．within

14、Some research workers completely       all those facts as though they never existed.

A．ignore       B．leave         C．refuse       D．miss

13、For professional athletes,        to the Olympics means that they have a chance to enter the history books.

A．access      B．attachment       C．appeal       D．approach