The USA shows great concern _______ human rights of all other countries,which is a laughing stock,_______ the many cases of blacks being maltreated in their own country.
In spite of repeated wrongs done to him, he looks __________ to people greeting him.
I'd appreciate __________ if you would like to teach me how to use blog and twitter on the Internet.
He prefers __________ the fruit at half price rather than __________ them to go bad.
__________ is very important for us students to learn English well.
I __________ go there alone, but he __________ go there by himself.