All of them felt it necessary that they______ __the meeting

I ____ to go for a walk, but someone called and I couldn’t get away.

—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
—____ my students have a try?

When the middle-aged man was visiting his girlfriend, she demanded that he _______ his beard.

It’s important that the future ______ with a goal of caring for the environment.

What if you _____ to send an essay with your application? Would you have been rejected?

I was admitted into a famous university. My success______ me pleased with myself but I didn’t .

________ you happen to see Mary, would you please ask her to come here?

John wants to see me now, but I have so much work on hand that I would rather he ________ tomorrow than today.

I think that's unlikely to happen, but if that_______, both America's and China's interest would be severely damaged.