5. A ________ is a small computer that we can carry to work or school easily.
A. smartphone
B. laptop
C. hardware
D. software
6. Many inventions are a result of careful________.
A. experiences
B. experiments
C. exercises
D. explorations
7. Thank you for your help. It was very ________of you.
A. valuable
B. convenient
C. useful
D. generous
8. He is so________ that he has lost his phone twice this week.
A. care
B. careful
C. careless
D. caring
9. Many people have________ clothes and money to people in flooded areas.
A. helped
B. donated
C. taken
D. shared
10. Our trip to Ha Long Bay was very________. We took a lot of photos.
A. excite
B. excited
C. excitement
D. exciting
11. One of the health________ of using a vacuum cleaners is improving the indoor air quality
A. profits
B. benefits
C. inventions
D. problems
12. We________ in Ha Noi since 2000. We love living here.
A. live
B. lived
C. have lived
D. are living
13. Nam can't cycle to school today because his bike ________.
A. breaks down
B. was breaking down
C. has broken down
D. is breaking down
14. Many people enjoy________ the news on their smartphones.
A. read
B. reads
C. reading
D. to read
15. Phong has decided________ a new laptop for his children
A. buy
B. buys
C. buying
D. to buy
16. It's very difficult________ this device.
A. use
B. to use
C. using
D. uses
17. While I ________ home from school, it ________ to rain. I was soaking wet!
A. walk / starts
B. walked / was starting
C. was walking / was starting
D. was walking / started
18. Hoang is very tired because he________ a lot of homework today.
A. does
B. is doing
C. has done
D. will do