1. A lot of marketing research institutes carry out telephone surveys. They ring people at home and ask them questions. 2. A Focus group is a small discussion group, led by a who asks detailed questions to get qualitative information. 3. Mystery shopping surveys are often carried out in-store to assess the level of service quality and cleanliness. 4. A Package test is designed to find out what customers think about packaging, and a Taste test is to find out what they think about the flavour of a product. 5. A marketing research institute may prepare a lengthy mail survey, which it posts to consumers at their homes. 6. These self-administered questionnaires are filled by the respondents.
Объяснение:
1) Olha has passed all her exams this summer.
2) I was working hard in the garden when I saw Dad.
3) They had visited their mother before they left.
4) She has written a test last week.
5) Last week, he had arrived at Heathrow Airport.