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Listen to the dialogue and pick out from the following the advice given by Emily.(多选)
A.
Andrew should open an online retail shop.
B.
Andrew should try every effort to get new customers.
C.
Keeping old customers can increase the profit of the business.
D.
Communicating with old customers is a good way to reduce marketing cost.
E.
Andrew should increase investment in marketing.
F.
Old customers’ loyalty can bring new customers.
G.
Customers will probably buy new products if Andrew offers some.