------- How can we __________ to a changeable environment?-------- By constant study and changing our ideas.
We should try our best to leave our generation a world better than________we were given.
—Can you accompany your little brother to the post office now?—________,if he is ready.
As everybody knows,kangaroos are native________Australia and are often regarded as one of Australia’s national treasures.
There is________as a free dinner in this world.As the saying goes,“No pains,no gains.”
Linda’s health is improving________day by day,and the doctor has advised her to stay home for a couple of weeks.