It was not until 1920 ___ regular radio broadcasts began.
| A．when | B．which | C．that | D．since |
What I need is _____ book that contains ______ ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a; the |
What a pity! I missed meeting my boss at the airport because my car was ______ in the traffic jam.
| A．broken up | B．kept away | C．held up | D．kept up |
His physical disability makes _____ rather difficult for him to find a good job.
| A．him | B．that | C．this | D．it |
-How do you find Xiamen,Cathy?
-It’s beautiful coastal city. I have ____ it for my next holiday.
| A．tried on | B．decided on | C．carried on | D．taken on |
The young man had made so much noise that he not have been allowed to attend the concert．
| A．should | B．must | C．could | D．need |