1. dentist/ had/ Minh/ a/ went/ yesterday/ because/ toothache/ to/ the/ bad/ he.

=>Minh went to the dentist yesterday because he had a toothache.

2. at/ his looked/ told/ the/ him/ worry/ to/ not/ teeth/ and/ dentist.

=> The dentist looked at his teeth and told him not to worry.

3. filled/ cavity/ in/ dentist/ week/ his/ a/ tooth/ last/ the.

=> The dentist filled cavity in his tooth last week.

4. they/ scared/ children/ come/ the/ see/ feel/ when/ to / most/ dentist.

=> Most the children feel scared when they come to see the dentist.