ctrl + key to spawn part and delete

local plr =  game:GetService("Players").LocalPlayer

local function sp()
    local mouse   = plr:GetMouse()
    local tp      = mouse.Hit+Vector3.new(0,0,0)
    tp            = CFrame.new(tp.X,tp.Y,tp.Z)
    local part    = Instance.new("Part")
    part.Parent   = game:GetService("Workspace")
    part.Anchored = true
    part.CFrame   = tp
end

local function dp()
    local mouse  = plr:GetMouse()
    local tp     = mouse.Hit+Vector3.new(0,0,0)
    tp           = CFrame.new(tp.X,tp.Y,tp.Z)
    local target = mouse.Target
    if target:IsA("BasePart") then
        target:Destroy()
    end
end

game:GetService("UserInputService").InputBegan:Connect(function(i, gay)
    local ctrl = game:GetService("UserInputService"):IsKeyDown(Enum.KeyCode.LeftControl)
    if i.KeyCode == Enum.KeyCode.Z and not gay then
        if ctrl then
            sp()
        end
    elseif i.KeyCode == Enum.KeyCode.X and not gay then
        if ctrl then
            dp()
        end
    end
end)