May I go and play with Dick this afternoon, Mum?— No, you can’t go out _____ your work is being done

If you can’t read the article, it will be meaningless to you. The –less in the word “meaningless” means .

I don’t think the film named　“Hero(英雄)”　is very exciting. — I don’t think it is，____________.

________people listened to the concert.

We won’t ______for delivery if you pay now.