These rivers should be prevented ___________.
| A．to be polluted | B．from being polluted | C．polluting | D．being polluted |
The teacher asked us __________ so much noise.
| A．don’t make | B．not make | C．not making | D．not to make |
However, even on TV and the radio you will hear differences in the way ______ people speak.
| A．that | B．in which | C．/ | D．all of the above |
catch the first bus, he got up very early this morning.
| A．In order to | B．In order that | C．So as to | D．So that |
The film ________ the World War II was made in Shanghai.
| A．base on | B．based on | C．base in | D．based in |
He likes to help others ________ he is very busy.
| A．because | B．if | C．even | D．even if |