V. Supply the correct word form to complete the following sentences. 20. Soil ______________ makes plants die. (pollute) 21.____________________________causes many floods. (forest) My father has a …………computer. He often brings it with him when he’s away on business. (port) 22. We are all ………..about going on an excursion to Cuc Phuong forest next weekend. ( excite) 23. The room will look brighter if there is a …………..on the wall. (paint) 24. Some of the children …………….boys, play marbles when there is a break. (main) 25. You shouldn’t eat ……….food. ( health) 26. We mustn’t be ……………….when we cross busy streets. (care) 27. She often feels …………………when she gets bad marks. (happy) VI. 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 (28)______ real, and they are helping us. In the future, we will have robots. They (29)_____ clean the floor, wash the dishes, cook meals, take care (30)______ children, make drinks and do many other housework. I (31) _____ think one day we’ll have robots friends. In Japan today, robot engineers are making robots to (31)______ 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 (32)______ the world is full of robots? Maybe one day we won’t be able to tell robots and humans apart.