It’ll be 3 days _____ he _____ back from his hometown.[ ]

Can you lend me your English-Chinese dictionary? — I’m sorry I have _____ dictionary You’d better go to the library [ ]

I don’t like the green pen. Would you please __________ me another one—Here you are.

Professor Li, who I _________ abroad, stillteaches in Peking University.

is hard is to do good all one’s life and never do anything bad.