. It isn’t so much whether he works hard; the question is whether he works _____.

With inspiration from other food cultures，American food culture can take a________for the better.                                                            (2013·江苏，33)

Thanks for your directions to the house; we wouldn’t have found it ___.

If parents have children help with housework, the children will feel needed. ___,they will learn to take care of themselves.

Sam _____ some knowledge of the computer just by watching others working on it.