Cause and Effect
Computer waster waste has seriously damaged the environment.
damaged
Using computers for long periods of time is definitely not harmless.
harmful
Technology (transform) all professional fields, since the first commercial personal computer (come) on the market in the early 1970s.
Technology has transformed all professional fields, since the first commercial personal computer came on the market in the early 1970s.
I didn't used to study hard when I was a child.
I didn't use to study hard when I was a child.
New technology has changed student life forever. Because with the internet students can access more information.
New technology has changed student life forever, because with the internet students can access more information.
Scientific research has led to some startling technical advances such as driverless cars.
led to
In my opinion, the software training was not effective.
ineffective
The year before last (be) the most boring in my life, yet since then everything (be) rather exciting.
The year before last was the most boring in my life, yet since then everything has been rather exciting.
Hanoi would be a quieter city when I was a child.
Hanoi used to be a quieter city when I was a child.
Students can do research from anywhere, for example, they can work at home or in cafes.
Students can do research from anywhere. For example, they can work at home or in cafes.
Certain inventions such as the jet engine have had a profound effect on air travel.
effect
It is not practical to have everyone studying the same subjects at university.
impractical
Communication (definitely be) less stressful since the smartphone (become) available.
Communication has definitely been less stressful since the smartphone became available.
My family would own a dog and a cat when I was younger but they have since died.
My family used to own a dog and a cat when I was younger but they have since died.
Considerable amounts of time can be saved, although, technology may also make the studying process more convenient.
Considerable amounts of time can be saved, although technology may also make the studying process more convenient.
Considerable amounts of time can be saved. Although, technology may also make the studying process more convenient.
The rapid pace of advances in technology has resulted in greater stress among workers compared to the past.
resulted in
I think having a knowledge of computer programming is very much not valueless.
invaluable
Last week, I (install) several maps on my phone, which (help) me enormously.
Last week, I installed several maps on my phone, which have/has helped me enormously.
I had played tennis every day last year, but now I don't.
I used to play tennis every day last year, but now I don't.
We had to retake the course, as a result, of failing the exam.
We had to retake the course as a result of failing the exam.
In the last 10 years, considerable improvements in health care have been brought about by technology.
brought about
The lecture on technology in the workplace was not inspiring.
uninspiring
The situation in Ukraine (escalate) last month and (continue) to do so consistently.
The situation in Ukraine escalated last month and has continued to do so consistently.
When we were kids, we had had so much fun. I remember it fondly.
When we were kids, we would have so much fun. I remember it fondly.
I am very anxious about taking the exam, however, calm I may appear.
I am very anxious about taking the exam, however calm I may appear.