Question

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

Answer 1

D

解析:

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。