An excellent teacher is believed to be one who cares about his students but asks for nothing __________.
| A．in turn | B．in short | C．in return | D．in general |
There are five pairs _______, but I’m at a loss which to choose.
| A．to be chosen | B．to choose from | C．to choose | D．for choosing |
—What do you think made Mary so upset?
—_______ her new bike.
| A．As she lost | B．Lost | C．Losing | D．Because of losing |
When I handed the report to John, he said that George was the person _______.
| A．to send | B．for sending it | C．to send it to | D．for sending it to |
She looks forward every spring to _______ the flower-lined garden.
| A．visit | B．paying a visit | C．walk in | D．walking in |
A cook will be immediately fired if he is found _______ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |