Jawaban:

2. have to
3. doesn't have to
4. have to
5. don't have to
6. has to
7. don't have to

Penjelasan:

Aturan:

has untuk:
she, he , it
have untuk:
I, you, we, they

do/don't untuk:
I, you, we, they

does/doesn't untuk:

she, he, it.

Aplikasikan:

2. have to (kalau masuk univeristas harus belajar dengan keras)
3. doesn't have to (tidak harus karena sudah dipinjamkan)
4. have to (siswa-siswa di UK harus mengenakan seragam sekolah)
5. don't have (sudah tahu, tidak perlu memberi tahu lagi)
6. has to (kalau mau sehat, harus perhatikan apa yang dimakan)
7. don't have to (tidak harus dibantu karena bisa dikerjakan sendiri)