II:
1: careful
2: nervous
3: will phone
4: stopped
5: to find
III: (Bonus):
1: What does your former look like?
2: Trang was interested in talking about her favourite sport
3: My friend is a good swimmer
4: Tam is not weak enough to ride a motorbike
5: She is the most beautiful in my class
IV:
1: have to
2: must
3: have to
4: have to
5: must