Чем виртуальная реальность и дополненная / интегральная реальность одинаковы и чем они отличаются? какую из двух технологий вы ожидаете стать более популярной в будущем?

1) make the sentences interrogative and negative:       a) i don't have to take a taxi. do  i have to take a taxi?       b) we aren't able to meet at 5 o'clock. are we able to meet at 5 o'clock?       c) you may not  do it yourself. may you  do  it yourself? 2) put the    sentences in the past and future tense:       a) you had to  tell us a story. you will have to  tell us a story.       b) we couldn't go together. we won't be able to  go together.       c) she might  take the book. she will be allowed take the book. 3) use modal verbs or their equivalents  :       a) could you do this work now       b) i won't be able  to visit you next sunday, because i have to meet my brother.       c) as the weather was fine, we would have to go to the country.       d) they can use a dictionary during their examp.