I. Chọn phương án đúng. (Choose the correct option.) 1. Their robot(could have/ could has) a skin. 2. Some decades ago, ASIMO robot(could run/ could ran) across the floor. 3. Yesterday Long(couldn’t do/ could did) his homework without my help. 4. Our grandpa (couldn’t use/ could used) mobile phone fifty years ago. 5. I was alone all morning, so I (could/ couldn’t) finish the book. 6. (Could you went/ Could you go) to school on time yesterday? 7. People (could watch/ could watched) T.V several decades ago. 8. I (could/ couldn’t) pick up the phone this morning because I was in the shower. 9. Our robot (could/ couldn’t) record videos because it had cameras. 10. We tried out best, but we (could/ couldn’t) win robotic competition last time. II. Chọn phương án đúng. (Choose the correct option.) 1. I’m so sad! I (will/ won’t) be able to laugh. 2. Uncle Hoang (will/ won’t) be able to repair my bike because he is very clever. 3. (Will Teresa be/ Will be Teresa) able to help us? 4. She will (able/ be able) to work soon. 5. I’m free tonight, so I (will/ won’t) be able to come and help you. 6. They (will/ won’t) be ahle to go there. They’re too tired. 7. I will be able (see/ to see) you next week. 8. If you don’t study the lessons, you (will/ won’t) be able to do the exercises. 9. One day I (will/ won’t) be able to run a marathon, but I need to practise first. 10. (Will he/ He will) be able to drive? III. Hoàn thành câu với can, can’t, could, couldn’t, will be able to hoặc won’t be able to. (Complete the sentences with can, can’t, could, couldn’t, will be able to or won’t be able to.) 1. Now robots ..... understand spoken commands. 2. Someday robot ..................do most of our jobs. 3. Look at that sign! You. .............. walk on the grass. 4. What a big library! You ............... arrange all books today. 5. She ............... play the violin when she was ten. 6. They .............. work better than humans soon. 7. We tried, but we ............... stop the fire. 8. .......... you take a picture of this robot? 9. I remember that my grandpa ............... draw much better than me. 10. Robots and computers ......... do more tasks than they do now. IV. Đổi câu sang thể phủ định và nghi vấn. (Change the sentences into negative and question form.) 1. People will be able to afford to buy robots. 2. Phong could play tennis last Monday. 3. He will be able to make a cake. 4. We could open the door although it was locked from the inside. 5. Michael will be able to play the guitar in six months. 6. She could understand what he said. 7. Robots will be able to cry. 8. Mike could play the piano when he was five. 9. They will be able to win the next robotic competition. 10. George could watch horror films.