It was not until 1920 ______ regular radio broadcasts began.
| A．while | B．which | C．that | D．since |
You say your home is in the south. Can you be a little more ____?
| A．specific | B．special | C．particular | D．especial |
．Please make sure that this room is ____ when the visitors arrive.
| A．in use | B．in peace | C．in order | D．in place |
It had never ____ to him that he might be falling in love with her.
| A．occurred | B．struck | C．happened | D．hit |
—Tom, you should avoid____ late for class.
—I' m sorry. I won' t be late again.
| A．being | B．be | C．to be | D．to be being |
The survey shows that urban students spend about twice ___ money the ones from rural areas do.
| A．the amount of | B．more than | C．as more as | D．as much as |