How beautiful she sings! I've never heard ________.
| A．the better voice | B．a good voice | C．the best voice | D．a better voice |
--- Will you waste your time and money on that?
--- Certainly ________.
| A．I not | B．don’t | C．not | D．no |
_________ to 100℃, water will boil.
| A．Being heated | B．Heated | C．Heating | D．To heat |
The traffic is heavy these days. I ________ arrive a bit late, so could you save me a place?
| A．can’t | B．must | C．need | D．may |
The consequences of our actions are unbelievably complicated and diverse _______ predicting the future is a very difficult business indeed.
| A．because | B．even if | C．in order that | D．so that |
The Internet has made it possible ______ in a very convenient way around the world.
| A．for people to communicate | B．for people communicating |
| C．for people communicate | D．for people to be communicated |