根据汉语提示完成句子
The sunlight __________________________________________________(由水面反射回来).
She doesn't know ________________________________________________________________________________ (如何处理这么多旧面料)
Mr Wang always has good ways to ________________________________________ (使他的学生保持兴趣)in hisclasses.
The number of students who attended his lecture ______________________________ (达到了)two hundred.
The meeting ______________________________(持续了3个小时)