Mark the letter A, B, C, or D to indicate the correct answer to each of the following sentences. 1. It's also very for learners to use them. D. convenient D. communicative D. helped A. convenience 2. The apps allow them A. communicate 3. The robots may be able A. help 4. Since laptops A. plentiful A. were invented - have allowed C. have invented - have allowed 5. Laptops are B. inconvenience and learn at the same time. B. to communicate you do the housework. B. helping C. to help they us to study better and work faster. B. invented - allowed D. are invented - have allowed C. inconvenient 6. They are A. asking B. explaining 7. Computers have completely changed our life A. since for students and officers to study and work flexibly. B. useful C. helpless B. for 8. In 2000, a robot created by a company A. amazes B. have amazed A B C. communicator D. worthy what they should do with the new computer. Each person has his own idea. D. discussing A. to make 14. That robot can show its____ A. attitudes C. suggesting their invention. 9. Nowadays, Al has been applied various areas of life. C. on A. for B. to 10. Vacuum cleaners with Al can now decide on the most A. effect B. affect 11. In transport, Al can be used on many smartphones A. collect B. require 12. Computer programmes can help ____ questions. A. designers 13. Al helps C. when D. while everyone by just walking down the stairs. C. amazed D. in way to clean the house. C. effective to C. hold D. was amazing 15. The Internet allows driverless cars to travel around without a person A. in B. at C. for D. effectively information about traffic. D. reserve plan their holidays, book flights and hotels, and answer B. customers C. sellers D. supporters machines that think and act like humans. B. have made C. making D. made when talking to humans. We may see its happiness or sadness. D. emotions C. equipment B. behaviours control. D. about or P to indicate the correct to each of the following questions.​