When he was young， he used to hard at his lessons.
| A．devote to working | B．devote himself to work |
| C．be devoted to work | D．be devoted to working |
Mr. Wang is a man of _________ and we have got much _________ from him about how to make a living.
| A．experience; experiences | B．an experience; an experience |
| C．experiences; experience | D．experiences; experiences |
Don’t forget to bring a dictionary next class.
___. I didn’t catch what you said.
| A．Never mind | B．I beg your pardon |
| C．That’s right | D．I’m not sure |
Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
| A．producing | B．having been produced |
| C．to be produced | D．produced |
Father finally came back home, which I ___ forward it.
| A．had been looking | B．have been looking |
| C．looked | D．have looked |
. Information has been put forward ___ more middle school graduates will be admitted into universities.
| A．while | B．that |
| C．when | D．as |