The public ___ of the environmental problem will make the government take it seriously.
| A．existence |
| B．revolution |
| C．awareness |
| D．evidence |
I can't wait __________ them.
| A．surprising | B．surprised |
| C．to surprise | D．surprise |
The subject________ he is interested is English.
| A．which | B．in which |
| C．at which | D．that |
My father is hard ______ me.
| A．to | B．with | C．of | D．on |
Upon _____ at the airport, we were given a warm welcome by the people there.
| A．arriving | B．arrive |
| C．we arrived | D．arrived |
The old man is ______ the big company.
| A．in the charge of | B．in charge of |
| C．take charge of | D．take the charge of |