Many of them ignored his advice, _______ they knew it to be very useful.
| A．as if | B．because of |
| C．even though | D．so that |
We must take measures to protect the environment from ______．
| A．polluting | B．being polluted | C．polluted | D．pollute |
---Will you come with me to see a film?
---Well,________, but I will try my best．
| A．as usually | B．no way | C．not a bit | D．it depends |
With the development of high technology, more and more new things _______ to the field of IT．
| A．have introduced | B．are being introduced |
| C．were introduced | D．had been introduced |
The dog was killed by the boss of this restaurant without _______．
| A．mercy | B．move | C．shame | D．strength |
The joke the naughty boy _______ his teacher made many people angry．
| A．made on | B．played on | C．played to | D．made to |