Looking up, I saw that some children _____ rags were looking at me silently as I ate.
My brother left home five years ago. I _______ nothing from him up to now.
The power to our region has been _______ by the heavy snow.
______more effectively with foreign firms, many Chinese firms have turned to new technology.
Those books ______ in brown paper are for the kids so that the kids will not easily tear them up.
You ______ regret all your life if you drive after you take some wine, I tell you.