I met one of my students the other day. After several years, she changed a lot and looked different from ____ she used to be. 

I’ve just read an excellent book of Moyan’s, ___________ you cannot afford to miss.

— Has        called the police?— Yes, Jim has.

 He is the most hard-working students in his class. That means he is more hard-working than_______ in his class.

I have two children, and _____ of them are working in the west of China.