80.It was not until 1920 ______ regular radio broadcasts began.
| A．while | B．which | C．that | D．since |
Although I liked the appearance of the house, what really made me decide to buy it was the beautiful________ through the windows.
| A．view | B．scene | C．sight | D．scenery |
Betty’s mother died of cancer last year, which had a great influence on her. She her mind to be a doctor to help the sick.
| A．made up | B．packed up | C．picked up | D．gave up |
—What do you think________ an important part in their lives?
—Pop music.
| A．plays | B．takes | C．makes | D．acts |
As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.
| A．gradually | B．sincerely | C．hopefully | D．frequently |
The money collected should be made good use __________ the people who suffered a lot in this terrible earthquake．
| A．of helping | B．of to help | C．to help | D．to helping |