"Have to" Crossword Puzzle

(TESOL Worksheets--have to)

Puzzle: here
Answers: here

I made this crossword puzzle using http://www.armoredpenguin.com/
This crossword was made to supplement Unit 2 Grammar in Conversation p.34 in English World 5.  As such, it reflects the distinction emphasized in English World 5 between future and past forms of "have to"