Prefixes and suffixes

Which among the following is a prefix?

• un-

• -ing

• -ed

• -able

Make the opposite of 'happy'.

Make a word with the prefix 're'.

In which word given below the prefix/suffix has been added correctly.

• happyun

• revisit

• playing

• cooked

Write a word with both a prefix and a suffix.

Make a word which has the suffix 'ing'.