The old man wanted to leave here, because he just couldn’t stand ______ in the noisy room. [ ]

Had I known about this computer program, a huge amount of time and energy _____. [ ]

There’ll be billions of people to watch the Spring Festival gala on TV tonight.——I knowThe whole world______．It’s a really wonderful event

MrSmith ______ the grammar book meant for senior high school students and will almost finish it

I think teenagers should be allowed to go to meet internet friends alone.—_________. It’s too dangerous.