题目内容


We congratulated him ______ his getting a gold medal.That is to say: we offered him our congratulations ______ his getting a gold medal.
A.at;onB.of;onC.on;forD.on;on
D
congratulate sb.on/upon (doing) sth.意为“为某事祝贺某人”。congratulation通常用复数congratulations,其后多用介词on。
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