Our class has already collected much____ on how to save energy so far.

How is it that you know she’s got back from the UK? —She ____ when I came out of the house this morning

The United Nations in 1945.　　

told me the last mountainous bike you preferredto yesterday was bought by John.—Oh, my! How I regret that I didn’t buy ______.

work hard with a strong will, we_____ overcome any difficulty, however great it is