What __________ fun we had __________ and learning at the same time!
| A．a; to play | B．a; playing |
| C．/; to play | D．/; playing |
Why don't you do it ____ other way?
| A．by | B．with | C．some | D．any |
We must show concern ____ each other.
| A．with | B．for | C．at | D．to |
I ____ too much reading.
| A．am tiring | B．tired out because of | C．am tired out in | D．tired myself out with |
We hope that she will ____ soon.
| A．returns back | B．reach to home | C．reach for | D．pull through |
If we can keep ____ this speed, we'll arrive there in two or three hours.
| A．on | B．to | C．up | D．at |