I must apologize for ________ ahead oftime.— That’s all right.

To achieve a bright future, we should ___ study hard ___ keep in good health.—I agree with you.

The parents have ________ their concerns about their children’s safety.[ ]

courage means the chance to win.

It is a pity that I missed the chance to get the signature of my favourite sports star, Liu Xiang ________.[ ]