Do you know the waste material can be made use ________ this kind of the toy?
| A．of producing | B．to produce | C．to producing | D．of to produce |
There _____ a dictionary and several books on the desk.
| A．are | B．must | C．have been | D．is |
What she says and does _____ nothing to do with me.
| A．was | B．were | C．has | D．have |
Every possible means _____ .
| A．has tried | B．has been tried |
| C．was tried | D．were tried |
When ______ the United Nations founded?
| A．is | B．are | C．was | D．were |
In my opinion, some of the news _____ unbelievable.
| A．are | B．is | C．has been | D．have been |