def submit(self, coro, callback=None):
        """Submit a coro as NewTask to self.loop without loop.frequncy control.

        ::

            from torequests.dummy import Loop
            import asyncio
            loop = Loop()

            async def test(i):
                result = await asyncio.sleep(1)
                return (loop.frequency, i)

            coro = test(0)
            task = loop.submit(coro)
            print(task)
            # loop.x can be ignore
            loop.x
            print(task.x)

            # <NewTask pending coro=<test() running at torequests/temp_code.py:58>>
            # (Frequency(sem=<0/0>, interval=0, name=loop_sem), 0)
        """
        callback = callback or self.default_callback
        if self.async_running:
            return self.run_coroutine_threadsafe(coro, callback=callback)
        else:
            return NewTask(coro, loop=self.loop, callback=callback)