28、You can’t see things clearly through a telescope unless it is _____ correctly to your sight.

  A. adjusted             B. examined         C. checked       D. tested

27、― I won the first prize in the oral English competition.

― _______!

A. Congratulations  B Good luck    C. All the best  D. I wish you success

26、My sister was very unhappy for _______ to the party.

A. having not been invited        B. not having invited

C. not having been invited       D. having not invited

25、 I just wonder ____ that delights the whole family so much.

A. how it is          B. what he does   C. what it is         D. how he does

24、______, We were taken to see the library.

  A. We had been shown the classrooms       B. Being shown the classrooms

  C. Having been shown the classrooms        D. Having shown the classroom

23、You can never imagine what great trouble I had _____ the poor boy who was hurt seriously.

A. helping                 B. to help               C. helped            D. help

22、     we are developing new technology        such a high pace, the true challenge is to find new ways of using it.

       A．Because; with      B．Now that; at        C．Now that; with     D．Because of; at

21、The nutrients in        falls into the ocean will quickly become available to other living creatures.

       A．whichever           B．hat                      C．whatever             D．wherever

20、He thanked us for         them in carrying through the plan; otherwise, they       by the company.

       A．providing; could be fired                       B．encouraging; could have been fired

       C．assisting; would have been fired            D．persuading; would be fired

19、He invented a lot of things, many of        taken       granted by people.

       A．them; for            B．which; for           C．what; of              D．which; of