Past - there to be
.
Comparative - who - short
.
Past - when - to travel
.
Past continuous - to watch
.
Verb to be - happy
.
Past - where - to go
.
Comparative - cool
.
Present - there to be
.
Present continuous - to prepare
.
Comparative - what - good
.
Present - to need
.
Present - to study - 3rd person
.
Past - to buy
.
Past verb to be - tired
.
Comparative - relaxing
.
Past - what - to drink
.