1. Teenagers spend most of their time playing computer games, __________ they lost their interests in daily activities.
   A. moreover
   B.so
   C. however
   D. as a result
2. A study shows that teenagers use text messaging to communicate with their friends more than_______________.
   A. to send email
   B. to write letteers
   C. emailing
   D. texting
 

4. With healthier _______ and better medical ______ ,people will have a longer life expectancy. ( ways-care/lifestyle-care / life- cares / lifestyles - medical)

5. Many people think the cuberworld will______ the real world ( take/ provide/ take place/ replace )

6. The invention of penicillin is very useful because it has _____ lots of lives. ( lost/ brought/saved/ solved)

7. It is said that in a couple of decades, we _____ telepathy and holography. ( use/ will be use/have use/ will be using)

8. Mars is named _____ the Roman God of war ( to/about/ after / under)

9. By 2050 we_____ in smart homes. ( will have live/ will be lived/ will live/ are living)

10. The Earth seems too small to _____ the increasing population. (provide/accommodate/ supply / stand)

CMR n⁵-n chia hết cho 30 với mọi số tự nhiên n

   (Luôn đúng )
  ⇔ ĐPCM

B:head office: trụ sở chính

ủa thế trong SGK có ko v bn??