句型转换:I happened to meet an old friend of mine in the street.(改为同义句)I happened to meet an old friend of mine in the street.(改为同义句)_____ _____ _____ I met an old friend of mine in the street.

问题描述:

句型转换:I happened to meet an old friend of mine in the street.(改为同义句)
I happened to meet an old friend of mine in the street.(改为同义句)
_____ _____ _____ I met an old friend of mine in the street.

It happened that