— How’s your tour around the North Lake? Is it beautiful?— It ______ be, but it is now heavily polluted.

You      remind him to keep things neat and tidy, because he is well organized. 

No one________ be more generous；he has a heart of gold.         

--   do you spell ring?       --________. 

You can't imagine that a well－behaved gentleman ________ be so rude to a lady.