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 |
There was a terrible noise _______the sudden burst of light.
| A．followed | B．following | C．to be followed | D．being followed |
When I handed the report to John, he said that George was the person______.
| A．to send | B．for sending it | C．to send it to | D．for sending it to |
I’m thirsty. Would you please give me something________.
| A．drunk | B．to drink | C．to be drunk | D．for drinking |
Do you consider _______any good attempting many scientific experiments?
| A．there | B．it | C．this | D．that |
I can’t help _______the house because I’m busy making a cake.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |