【题目】—I came out top of the School Composition Contest，Mum.
—____________，son! I'm really proud of you.
A.Well done
B.Keep cool
C.Go ahead
D.Come on

【答案】A
【解析】A．Well done好棒；B．Keep cool保持冷静；C．Go ahead开始吧，用吧，用来同意对方提出的要求；D．Come on用来督促对方“快点”或给对方鼓励“加油”；句意：—妈妈，我在校作文比赛前几名。—好棒！儿子，我以你而自豪。根据句意，故选A。