Computer science, Logisim program, anyone have solutions to my HW

First create a circuit called 1-bitAdder with three inputs a,b, carryIn, two outputs sum and carryOut

Then create a circuit called 1-bitAlu, to include 1-bitAdder, AND, OR and a multiplexer, and 2-bit Operation

Use four 1-bitAlus to create a 4-bitAlu. with three control signals: Bnegate (1), Operation (2),

Control signals are 000, logical AND

   001, logical OR

   010, ADD

   110, Subtract