Choose the letter A, B, C or D the word that has the underlined part different from others.
1: A. $a$ccent B. c$a$ttle C. k$a$ngaroo D. p$a$rade
2: A. $h$aunt B. $h$our C. $h$elp D. $h$old
3: A. s$ch$edule B. s$ch$ool C. s$ch$olar D. lo$ch$
