Choose the correct answer to complete

Question 5. Every year, heavy rains affect the central-eastern provinces of Vietnam and cause ...........
A. floods​​B. droughts​​C. earthquakes​D. eruptions
Question 6. I saw a beautiful bird while I ............... in the park this morning.
A. walked​​B. have walked​​C. had walked​D. was walking
Question 7. During Tet holiday, many Vietnamese families visit pagodas ............ than on other occasions.
A. more frequent​B. more frequently​C. frequenter​D. as frequently
Question 8. I wish I .............. you but I’m too busy at the moment.
A. have helped​​B. could help​​C. can help​​D. would help
Question 9. Shop assistant: “Would you please wait a few minutes?” Customer: “..........”
A. Of course, I will.​​B. Not at all. I have waited.
C. No, thanks. I need a few minutes.​D. No worries. I’m in no rush.
Question 10. Planet Earth, .......... is the third planet from the Sun, is known for its diverse ecosystems and abundant natural resources.
A. what​​B. who​​C. whose​D. which
Question 11. Many of the gases which are produced by factories are ........... to our health.
A. harmful​​B. destructive​​C. disastrous​D. unreliable
Question 12. Tessa has so ....... homework that she can’t go out with us.
A. many​​B. plenty​​C. little​D. much
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