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A ________ is a small computer that we can carry to work or school easily.

• smartphone

• laptop

• hardware

• software

Many inventions are a result of careful________.

• experiences

• experiments

• exercises

• explorations

Thank you for your help. It was very ________of you.

• valuable

• convenient

• useful

• generous

He is so________ that he has lost his phone twice this week.

• care

• careful

• careless

• caring

Many people have________ clothes and money to people in flooded areas.

• helped

• donated

• taken

• shared

Our trip to Ha Long Bay was very________. We took a lot of photos.

• excite

• excited

• excitement

• exciting

One of the health________ of using a vacuum cleaners is improving the indoor air quality

• profits

• benefits

• inventions

• problems

We________ in Ha Noi since 2000. We love living here.

• live

• lived

• have lived

• are living

Nam can't cycle to school today because his bike ________.

• breaks down

• was breaking down

• has broken down

• is breaking down

Many people enjoy________ the news on their smartphones.

• read

• reads

• reading

• to read