Jack a great talker. It’s high time that he __ something instead of just talking.

So far we have done a lot to build a low-carbon economy, but it is _______ ideal. We have to work still harder.

What colour is it——It’s orange. It’s orange pen.

If I speak this way, could you hear me clearly –__________

He is so careless that he always ______hisschool things at home.