_____ is known to all, paper was first made in China.
| A．It | B．That | C．Which | D．As |
The beautiful song ________ me of those happy old days we had spent together.
| A．repeated | B．remembered | C．informed | D．reminded |
I really appreciate ________ to drive me home, but I’m afraid I have to finish my work first.
| A．you to offer | B．you offer | C．your offering | D．that you are offering |
Having been married for over 10 years, the couple ____ finally because they quarreled a lot.
| A．broke up | B．broke down | C．broke out | D．broke in |
I borrowed several books from the library, ________ are about English study.
| A．two of them | B．and two of which | C．two of which | D．two of what |
Most of us value our time, but some of us treat it ________ it had no value at all.
| A．even if | B．as long as | C．even so | D．as though |