Scientists consider the robot astronaut a good help in space.

Scientists consider that the robot astronaut is a good help in space.

The robot astronaut knew how it could walk properly in space.

The robot astronaut knew how to walk properly in space.

The robot astronaut is so clever that it can work with other astronauts in space.

The robot astronaut is clever enough to work with other astronauts in space.

The news is too fantastic for us to believe.

The news is so fantastic that we can hardly believe it.