China is a great country ______ a long history.

Not only my friends but also my brother and I interested in those plays at that time.

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

Mr. Smithworks as a government official now, but he ________in a middle school for 5years.

I often make mistakes _______grammar.—Why not ask your teacher _______help