It took us quite a long time to get to the amusement park. It was                  journey.

A. three hour       B. a three-hours       C. a three-hour     D. three hours

If our parents do everything for us children, we won't learn to depend on                     .

A. themselves           B. them    C. us  D. ourselves

 Every few years, the coal workers                  their lungs X-rayed to ensure their health.

         A. are having          B. have     C. have had             D. had had

 Lucy has a great sense of  humour and always keeps her colleagues       with her stories.

       A. amused   B. amusing          C. to amuse        D. to be amused

 Have you any knives？ I need a sharp ________.

      A.it         B. another        C.  one                      D.any

_____ is reported in the newspaper that talks between the two countries are making progress.

A. Which    B. As     C. That      D. It

 It was 1920 ______ regular radio broadcasts began.

A.while            B.when               C.that                    D.since

.Among all the problems,_______is so difficult as this one.

A.not one            B.either     C.neither          D.none

 The doctors must get there in half an hour. There should be no____ in sending the blood to the dying girl .

A. delay 　                B. wait              C. time 　       D.hurry

The new law would come into ___on the day it was passed.

A. effect　　           B. use　　         C. service 　   D. existence