______ adults began to learn English in this small town.
| A.Thousand of | B.Thousands of | C.Thousand from | D.Thousands from |
This machine was used -------years ago.
| A.five hundred | B.five hundreds |
| C.five hundreds of | D.five hundred of |
Please pass me two---------.
| A.pieces of paper | B.pieces of papers |
| C.pieces paper | D.piece papers |