Mr.Black went to Washington D.C by car last week(同义句）

Mr. Black drove to Washington D.C last week.Mike is 15 years old .Sandy is 18 years old.(1)mike is______ ______ ________ ________sandy(2)mike is______ ______ ________ ________sandy这个呢，两种Mike is 15 years old .Sandy is 18 years old.(1)mike is 3 years younger than sandy(2)mike is not as old as sandy