The preposition to refers to a place, direction, or position. To is also used before the verb in an infinitive. The adverb too means "also" or "excessively." Two refers to the number 2.
Examples:
- Meg was too tired to walk home. I was tired, too. The two of us walked to a phone booth, and I called for a cab.
- "Ferris, please. You've gone too far. We're going to get busted."
(Mia Sara as Sloane in Ferris Bueller's Day Off, 1986)
Practice:
(a) I have wanted _____ visit Boise for years.
(b) I have always been _____ busy _____ go.
(c) Next week I am driving _____ Boise, and you may come _____.
(d) I'll be gone for _____ weeks.


