Fill in each numbered gap with one suitable word to complete the following passage.
A long time ago, robots belonged to science fiction. But today, robots (31)____________ real, and they are helping us. In the future, we will all have robots. They (32)____________ clean the floor, wash the dishes, cook meals, take care (33)_____________ children, make drinks and do many other housework. I even think one day we’ll have robots friends. In Japan today, robot engineers are making robots to (34)___________ old people. It’s still early days. I’d say we are another 20 to 30 years away from robots being everywhere in our lives. What will happen to us (35)_____________ the world is full of robots? Maybe one day we won’t be able to tell robots and humans apart.