It is selflessthe mostbeautiful teacher—Yang Xiangming to lose his lifethechild in the river.—I think so, he is so great.

We are designing an experiment to find out whether glass _____ more easily when it is cold[ ]

How do you think he managed to improve hisEnglish in such a short time—______ four hours on it every day

The boy on the playground ____ be Tom, because he saw him in the library just now.

You’d better not leave the medicine __kids can get at it．