The idea for the new machine came to Mr. Baker ______ to his invention recently.
| A．while devoting | B．while devoted | C．while he was devoted | D．while devoting himself. |
It’s impolite ___ you to ask one’s private affairs.
| A．for | B．of | C．to | D．on |
When I was in trouble, my friends often ___ me a lot of help.
| A．asked for | B．offered | C．needed | D．wanted |
We expected that he ____ for the meeting.
| A．turned down | B．turned on | C．turned up | D．picked up |
I have two uncle, but ____ of them lives here.
| A．both | B．all | C．neither | D．none |
Those ___ want to go there, please write down your names.
| A．who | B．whom | C．which | D．all |