Only after the teacher explained it to me a second time _____ the question.
It is commonly assumed that the growth of GDP and the development of people’s living conditions are not _______cause and effect.
—How much is too much for a schoolbag?—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
Although the huge engine, as tall as 25 meters, is heavy_______, it is powerful and works well.
Some people haven’t realized something as common as _______to the sun for a long time will do harm to their skin and even cause skin cancer.
He travelled to many mountains and saw many poor children, which _______his life.