5. On their arrival on the airport, ___________.
| A．a group of children welcomed them with flowers |
| B．bunches of flowers were presented to them by a group of children |
| C．they were presented with flowers by a group of children. |
| D．they were welcome by children with flowers |
No permission has ___ for anybody to enter the building.
| A．been given |
| B．given |
| C．to give |
| D．be giving |
In the last few years thousands of films __________ allover the word.（2011天津卷3）
| A．have produced |
| B．have been produced |
| C．are producing |
| D．are being produced |
The factory used 65 percent of the raw materials, the rest of which _______saved for other purposes.（2011安徽卷27）
| A．is |
| B．are |
| C．was |
| D． were |
All visitors to this village _________ with kindness. （2011四川卷9）
| A．treat |
| B．are treated |
| C．are treating |
| D．had been treated |
Experiments of this kind _______ in both the U.S. and Europe well before the Second World War.（2011北京卷21）
| A．have conducted |
| B．have been conducted |
| C．had conducted |
| D．had been conducted |