Here are the correct answers for the questions you provided:
Task 2: Choose the correct item.
6. Scientist at NASA spent over ten years designing a special pen which can write in ... gravity
d. vacuum
If your computer has suddenly got frozen, first of all you should try to ... the system
a. rebootPeople are ... Some say that AI is absolutely harmless, others say that it may threaten our society.
d. dividedOur teacher believes that we will ... at our future jobs and will have a great career
b. come outLook at this picture. It's a perfect example of cubism. It has dull colours: different ... of grey, black and brown.
a. shades
Task 3: Choose the correct item.
When Jane was a child, she ... a lot of books about mysterious creatures
a. used to haveCan you be a little more careful, please? You ... coffee on my keyboard
d. spilledMark, ... cousin works at ISS, wants to become an astronaut too one day
b. whoseMaria ... a handicraft for three years before she decided to open her own pottery shop
d. had been making
If you have any further questions or need more assistance, feel free to ask!