_____ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
| A．If | B．While | C．Because | D．As |
News came from the school office______ Wang Lin had been admitted to Beijing University.
| A．which | B．what | C．that | D．where |
To begin with, we learn how to______ our body when skating.
| A．balance | B．keep | C．hold | D．get |
My sister, as well as her classmates who_______ late for class , ________ criticized by their head teacher.
| A．were, were | B．was, was | C．were, was | D．were, was |
—Who____ it be that is knocking at the door?
—It ____ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |
My uncle’s house in the downtown area is much smaller than ours, but it is ______________ expensive.
| A．as much twice as | B．twice as much as | C．much as twice as | D．twice much as |