Mrs. Smith was worried about both of her daughters, especially the ________ one.

It’s ________ of Chen Guangbiao(陈光标) to donate 100,000,000 yuan to people in debris disaster areas(泥石流灾区) in Taiwan. I think he is one of the best philanthropists(慈善家) in the world.

Jack never stops talking. He is much ___ than his brother.

Jack felt nervous when he found the physics problems ____ to work out.

I’m 14. Li Lei is 15. I’m _____ than Li Lei.