Now methods need to be to use the existing water resources, for example, turning sea water into fresh water.
| A．developed | B．assumed | C．abandoned | D．purchased |
He asked me ________ with me.
| A．what the matter is | B．what the mater was |
| C．what is the matter | D．what was the matter |
---Do you mind my turning off the light?
----_____________.Im reading a book.
| A．No,not at all. | B．Of course not. |
| C．I rather you didn't . | D．Yes,please. |
--- Im afraid I can not return the book to you before Friday
----____________.
| A．Dont be afraid . | B．Be careful |
| C．Forget it | D．Take your time |
When the expression first came into being, people refused to use it but _____ they began to accept it.
| A．usually | B．gradually |
| C．frequently | D．quickly |
Everybody has ______ to play _____ our environment.
| A．a part; to protect | B．a role; in protecting |
| C．part; in protecting | D．a role; to protect |