Here's the matching of sentences:

1. You shouldn't go in through the front entrance of the shop. - D. NO PETS ALLOWED Service animals specifically trained to aid a person with a disability are welcome.
2. Extra staff are needed here for weekend work. - F. Wanted – Sales Assistants Saturday to Sunday 11 a.m. – 6 p.m.
3. Contact this person to get your pet back. - C. DOG FOUND   Male beagle found 11:30 am on Tuesday, April on Pine street. Call Tom on 986 378
4. Please ask the shop assistants if you need any help. - E. Pete’s Pets 8 a.m. – 6 p.m. weekdays 8 a.m. – midday weekends
5. You cannot buy a pet here on Saturday or Sunday afternoon. - E. Pete’s Pets 8 a.m. – 6 p.m. weekdays 8 a.m. – midday weekends
6. These are cheaper at the moment. - A. This month only – 60% discount on all pet care magazines
7. You cannot buy food for pets here on Saturdays and Sundays. - E. Pete’s Pets 8 a.m. – 6 p.m. weekdays 8 a.m. – midday weekends
8. Only disabled people can go with pets. - D. NO PETS ALLOWED Service animals specifically trained to aid a person with a disability are welcome.

Explanation:

• Sentence 1 matches with D because it's about the rules for entering the shop with pets.
• Sentence 2 matches with F because it's about the need for more staff on weekends.
• Sentence 3 matches with C because it provides information about a lost pet.
• Sentence 4 matches with E because it's about asking for help from shop assistants.
• Sentences 5 and 7 match with E because they both mention the shop's opening hours and the fact that you can't buy pets or pet food on weekends.
• Sentence 6 matches with A because it's about a discount on pet care magazines.
• Sentence 8 matches with D because it's about the rules for bringing pets into the shop.