She likes to use words ___ is clear to us.

    A. of which meaning   B. whose of meaning   C. meaning of which  D. of which the meaning

I have bought two pens, _______writes well.

A. neither of them     B, neither of which        C. none of which        D. both of which

A good advertisement,people attach positive meanings, can contribute to the sales of a product．

For many cities in the world, there is no room to spread out further, _____ New York is an example.

Look out! Don’t get close to the house, ______ the roof is under repair．