Find the word with the different underlined sound

I. Find the word with the different underlined sound.(1p)

1. A. favourite                         B. slight                       C. fine                        D. high

2. A. fold                                B. close                       C. popular                   D. hold

3. A. then                                B. thing                       C. them                       D. their

4. A. treat                                B. clean                       C. beach                      D. great