.With more forests being destroyed, huge quantities of good earth _________ each year.
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |
The project is based on an agreement, one of _____ purposes is to ensure that the project can be completed before the deadline.
| A．whose | B．which | C．its | D．what |
No decision _____ about any new operations until we have discussed all the details.
| A．is made | B．is being made | C．has been made | D．will be made |
— I am going to the dentist at 4 o'clock and it is 3：30 now.
— Well, if you ______ leave earlier today, please ask the director for permission.
| A．can | B．may | C．must | D．will |
Those who continuously acquire new knowledge that they can ______ their work are more likely to succeed.
| A．apply to | B．adapt to | C．contribute to | D．respond to |
______ yourself with positive people, and you will keep focused on what you can do instead of what you can’t.
| A．Surround | B．Surrounding | C．Surrounded | D．Have surrounded |