3) I think taxes should be increased.
TIME
It ..... increased
4) He behaves like the President of the company.
THOUGH
He acts ..... the President of the company.
5) I regret not inviting Cathy to the party.
ONLY
If ..... Cathy.
6) I'd prefer you to get home early tonight.
RATHER
I ..... home early tonight.
7) It's a pity the car is so expensive.
WISH
I ..... so expensive.
8) It will be better for you to come alone.
SOONER
I would ..... on your own.