There was ____time _____I hated t go to school.
| A．a ,that | B．a ,when | C．the ,that | D．the ,when |
The new law would come into ___on the day it was passed.
| A．effect | B．use | C．service | D．existence |
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 |
.Among all the problems,_______is so difficult as this one.
| A．not one | B．either | C．neither | D．none |
It was 1920 ______ regular radio broadcasts began.
| A．while | B．when | C．that | D．since |
_____ is reported in the newspaper that talks between the two countries are making progress.
| A．Which | B．As | C．That | D．It |