John Hope Franklin was _______ respected historian and social activist, who wrote about race and _______ struggles of black Americans.
---There is some doubt _____ the concert will be held as the company intends to redecorate the stadium next week. ---What a pity!
The number of various educational programs is increasing important roles have been recognized by more and more people.
Through so much trouble,he learned ________ everyone needed friendship and ________self confidence is important.
The American economy is still in trouble,________ the Chinese economy is beginning to pick up.
You’d better go to bed. There isn’t anything on TV worth ________ up for.