a) Were books first printed in the 15thcentury? Were books first printed in the 15th or 16th century? Books were firstprinted in the 15th century, weren't they? b) Did printers start printing books in three countries at the same time? Did printersstart printing books in three or five countries at the same time? Printersstarted printing books in three countries at the same time, didn't they? c) Can anyone read books on CDs these days? Can anyone read books on CDs orDVDs these days? These days anyone can read books on CDs, can't they? d) Did Columbus discover America five centuries ago? Did Columbus discoverAmerica or Canada five centuries ago? Columbus discovered America fivecenturies ago, didn't he? e) Does the Internet provide us with access to any library all over the world? Doesthe Internet provide us with access to any library or museum all over theworld?The Internet provides us with accessto any library all over the world, doesn't it? f) Did people living in one part of the world not know much about the life ofpeople in their neighbouring countries not long ago? Did people living in onepart of the world know much or little about the life of people in theirneighbouring countries not long ago? Not long ago people living in one part ofthe world didn't know much about the life of people in their neighbouringcountries, did they?
Answers & Comments
Verified answer
a) Were books first printed in the 15thcentury? Were books first printed in the 15th or 16th century? Books were firstprinted in the 15th century, weren't they?b) Did printers start printing books in three countries at the same time? Did printersstart printing books in three or five countries at the same time? Printersstarted printing books in three countries at the same time, didn't they?
c) Can anyone read books on CDs these days? Can anyone read books on CDs orDVDs these days? These days anyone can read books on CDs, can't they?
d) Did Columbus discover America five centuries ago? Did Columbus discoverAmerica or Canada five centuries ago? Columbus discovered America fivecenturies ago, didn't he?
e) Does the Internet provide us with access to any library all over the world? Doesthe Internet provide us with access to any library or museum all over theworld? The Internet provides us with accessto any library all over the world, doesn't it?
f) Did people living in one part of the world not know much about the life ofpeople in their neighbouring countries not long ago? Did people living in onepart of the world know much or little about the life of people in theirneighbouring countries not long ago? Not long ago people living in one part ofthe world didn't know much about the life of people in their neighbouringcountries, did they?