问题
选择题
We congratulated him ______ his getting a gold medal.That is to say: we offered him our congratulations ______ his getting a gold medal.
A．at;on
B．of;on
C．on;for
D．on;on
答案
答案：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。