Compound Sentences

Which sentence is joined correctly?

• A.

  Peter likes to write in his tablet but Joe prefers to type on the laptop keyboard.

• B.

  Peter likes to write in his tablet, but Joe prefers to type on the laptop keyboard.

• C.

  Peter likes to write in his tablet and Joe prefers to type on the laptop keyboard.

• D.

  Peter likes to write in his tablet, and Joe prefers to type on the laptop keyboard.

Which sentence is joined correctly?

• A.

  Some companies collect your information, and they can guess you're male of female.

• B.

  Some companies collect your information and they can guess you're male of female.

• C.

  Some companies collect your information, but they can guess you're male of female.

• D.

  Some companies collect your information but they can guess you're male of female.

Which sentence is joined correctly?

• A.

  Everyone sees ads when visiting websites and those ads are different.

• B.

  Everyone sees ads when visiting websites, and those ads are different.

• C.

  Everyone sees ads when visiting websites but those ads are different.

• D.

  Everyone sees ads when visiting websites, but those ads are different.

Join the ideas with "but" or "and" in a single sentence: Laura sometimes uses her laptop. She always checks her smartphone.

Join the ideas with "but" or "and" in a single sentence: There are lots of educational videos on this website. All of them are interesting.