单项选择题
A．four B．fourth C．the fourth D．a fourth
Such electronic devices（）are used in a radio set are al...
单项选择题Such electronic devices（）are used in a radio set are also found in a computer.
A．which B．that C．what D．as
Look at those students in the reading room. Some are re...
单项选择题Look at those students in the reading room. Some are reading newspapers;（）are reading magazines.
A．other B．the other C．others D．the others
Everybody says he is a（）boy. A．promised B．promising C．t...
单项选择题Everybody says he is a（）boy.
A．promised B．promising C．to promise D．promise
