Heroes are those who，givena choice between doing the right thing at great personal cost or the wrongthing for great personal benefit，＿＿＿＿theformer

Who helped Li Lei with his English — , he learnt it by himself.

Hearing the news, he rushed out, thebookon the table and disappointed into thedistance.

I don’t care for baseball— How can you say you don’t like something _____ you’ve never even tried it! [ ]

I don’t agree with your plan. You should never put your fortune ________ luck.