III. Use 'who', 'which', 'that' or 'whose' to complete each of the sentences.
1. Vinh, ___________________ is only two and a half, likes to play games on a tablet.
2. My tablet, __________________________ is two years old, still works quite well.
3. Personal electronic devices __________________ distract students from their class work are banned in most schools.
4. Students ___________________ have smartphones can use them to look up words in an electronic dictionary.
5. Some scientists think that children ______________________ parents allow them to use electronic devices early will have more advantages in the future.
6. The laptop _________________ cover is decorated with funny animals belongs to my aunt.