Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
| A．being used | B．used | C．to be used | D．having been used |
This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.
| A．would | B．should | C．could | D．might |
I have reached a point in my lifeI am supposed to make decisions of my own.
| A．which | B．where | C．how | D．why |
I travel to the Binhai New Area by light railway every day, _____ do many businessmen who live in downtown Tianjin.
| A．as | B．which | C．when | D．though |
Over the past decades, sea ice _______ in the Arctic as a result of global warming.
| A．had decreased | B．decreased | C．has been decreasing | D．is decreasing |
I’m not surprised that he became a writer. Even as a child he had a _____ imagination.
| A．clear | B．cautious | C．funny | D．vivid |