Exercise 1: Part A

1. Unless you show us the _______, you can’t exchange the faulty product.
   A. receipts B. bills C. membership D. purchases

2. Before the _______ of the Internet, television was a popular form of home entertainment.
   A. discovery B. invention C. production D. success

3. Scientists have been searching _______ water on the moon.
   A. at B. for C. out D. into

4. I’ve often _______ of flying to the moon. I have been reading a lot on space research.
   A. inspired B. dreamt C. heard D. wished

5. Can you tell us when the first mobile phone _______?
   A. is invented B. will be invented C. has been invented D. was invented

6. Today the internet _______ mostly from a mobile phone.
   A. will access B. accesses C. was accessed D. is accessed

7. The headmaster plans to spend five minutes _______ the parents about the new multi-media classroom.
   A. enquiring B. apologising C. warning D. informing 

8. Don’t throw away these _______ batteries. They last a long time.
   A. rechargeable B. unusable C. powerless D. cordless

9. Bill ______ a job in the factory, but he ______ to take it.
   A. had offered - was refused B. is offered – refused
   C. was offered – refused D. will offer - has refused

10. ______ weather events like hurricanes, droughts, and heatwaves are becoming more frequent due to climate change.
    A. Agreeable B. Deteriorating C. Extreme D. Undesirable

11. It can take some time to adjust ______ a new home and its surroundings.
    A. with B. to C. into D. for

12. I plan to ______ about the availability of tickets for the upcoming concert at the box office.
    A. investigate B. enquire C. inform D. apologise

13. The battery-______ flashlight provided a reliable source of light during the power outage.
    A. operated B. energy C. reliant D. powered

14. The ______ company launched a new product that is expected to compete directly with our latest innovation in the market.
    A. opponent B. competitor C. enemy D. rival

15. After the storm, the power lines were ______, leaving the neighborhood without electricity for several days.
    A. disconnected B. linked C. disrupted D. recharged