Einstein’s Theory of Relativity is so ________that most of us can not understand it.

According to the report, this gentleman is ________ to be the next prime minister of the country．

______ with so many challenges, Yang Guang, a blind young fellow, didn’t give up; he made great efforts to win success.

Though he is a(n)      looking person, he is well received in his country.

I think whoever makes ______ contributions to the company than others should get ______ income.