It was _______ she was injured in the accident _______ she didn’t come to the party yesterday.
| A．as; which | B．because; that |
| C．since; why | D．for; that |
What is concerning us greatly is ____ the workers held up in that area yesterday will be set free.
| A．that | B．what | C．when | D．which |
Even if there is no scientific proof secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk.
| A．which | B．that | C．when | D．where |
Great inventors don’t ________ graduate from famous universities. Some didn’t even go to university.
| A．likely | B．necessarily | C．really | D．particularly |
Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
| A．shall | B．need | C．can | D．must |
Filmisnot onlyauniversalentertainmentmodeinmodern times,but also an important ________ for cultural communication.
| A．transportation | B．appearance | C． controversy | D．vehicle |