16.  I am tired, ……… I will go to bed early.

A. but B. and C. so D. because

17. ……… do you like the Animals program? ~ Because I love animals.

A. When B. Why C. Where D. What

18. William Shakespeare is ……… British writer in the world.

A. more popular             B. the more popular

C. most popular D. the most popular

19. You can take these plastic bottles to the factory to ……… them.

A. recycle B. reuse C. reduce D. use

20. ……… I don’t like vegetables, I eat them everyday.

      A. But      B. If C. Although D. Because

21. If I ……… a bird, she……… be a white dove.

A. am/ will be B was/ would be

C. were/ would be D was/ will be

22. ……… is special clothing to wear when astronauts work outside in space.

A. Space station  B. Gravity   C. Spaceship  D. Spacesuit

23. In the future, automatic food machines ……… all our food.

A. might make B. will be C. have D. prepares

24. A ……… will help you see in the dark.

A. battery B. flashlight               C. horror         D. drama

25. - A: Should we bring some snacks to eat? 

- B: ………

A. Yes, I did.         B. Yes, good idea.  

 C. Yes, you need. D. I don’t have.

26. " I 've just received a scholarship". -  ".......................!"

    A. Really                             B. Thank you                C. Congratulations       D. Well

27. "....................................? " - She is very kind and creative.

     A. What does your best friend look like?           B What is your best friend like?

      C. How is your best friend?                                 D. What does your best friend like?

28. There is a big temple in the town. ...........temple is very old.

       A.  A                                 B. The                      C. An                        D. X (no article)

29. We should use reusable water bottles.....................of plastic ones.

      A. because                         B. instead                 C. despite                   D. however

30. Children will work hard if the lessons are.....................

A. interesting               B. interested            C. interest       D. boring.
GIẢI THÍCH