—I need to write now.
—Here you are.
- A.two papers;in
- B.two pieces of paper;on
- C.two paper;on
- D.two pieces of paper;in
答案
正确答案:B

由于paper是不可数名词,所以一张纸为a piece of paper,二张纸为two pieces of paper,写在纸上,用介词on。

略
