帮忙把这2句话改为含有定语从句的复合句

问题描述:

帮忙把这2句话改为含有定语从句的复合句
Barack Obama was born in 1961.He is the 44th President of America.
Alexander Bell invented telephone.Telephones are of great importance to our life today.

Barack Obama who was born in 1961 is the 44th President of America把第一句话作为定义从句更合适Telephones that Alexander Bell invented are of great importance to our life today