What do you want to be in the future —I want to be ____ pilot . It is ____exciting job.

She studies for an English test by_______the textbook.

Hong Zhanhui never gives up trying. It is the love and responsibility _______ has driven him to go through hardships and survive in life.

The problem with people in Africa ____that the more is given and the more ______

The book was written in 1946, _______ the education system has witnessed great changes.