_________, the experiment is sure to succeed.
| A．If carefully doing | B．If carefully done |
| C．If it done carefully | D．If it doing carefully |
I am busy now. _________ my brother do it for you?
| A．Will | B．Shall | C．Must | D．May |
---I wonder if I could possibly use your car tonight?
---_____. I’m not using it anyhow.
| A．Sure, go ahead. | B．I don’t know |
| C．Yes, indeed. | D．I don’t care |
I volunteer for the people heart and soul all my life.
| A．to working | B．working |
| C．to work | D．to be working |
Immediate measures to deal with the emergencies once they happen.
| A．will be taken | B．will take |
| C．have been taken | D．have taken |
If you keep doing foolish things, you surely by the people around you.
| A．are laughed at | B．are being laughed at |
| C．will be laughed at | D．were laughed at |