A number of students trees every year and the number of them increasing.
When he was awake, she found she was lying on _______ seemed to be a piece of stone.
—It seems impossible for you to cover that long distance1! —In no way ___________give up.
The most important words in this sentence have been ________ ,so it doesn’t make any sense.
American women usually identify their best friend as someone ________they can talk frequently.
— Look! It _____________ again. —Yes. This is the third rain we ____________ this month.