After the long journey, the Whites returned home, ___________.

Only _______ people can have a good understanding of the lecture given by the scientist.

The competition for job hunting is             since there are more and more college graduates.

_______should not be allowed to get ears pierced.

-- Bob, please go and buy some vegetables for me. I’m busy now.-- Can you be more ________， mum?-- Some tomatoes and a cabbage.