1) If you want to be an effective salesperson, it is necessary that you know how to deal with people. a) you have to know b) you mustn't know c) you should know d) you don't have to know 2) It is a good idea for retailers to dispatch orders quickly. a) Retailers should dispatch orders quickly. b) Retailers must dispatch orders quickly. c) Retailers mustn't dispatch orders quickly. d) Retailers don't have to dispatch orders quickly. 3) One of the good things about malls is that it is not necessary to walk a lot from one shop to another. a) You don't have to walk a lot between shops. b) You have to walk a lot between shops. c) You mustn't to walk a lot between shops. d) You should walk a lot between shops. 4) It's not a good idea to talk about yourself. a) You shouldn't talk about yourself. b) You should talk about yourself. c) You must talk about yourself. d) You mustn't talk about yourself. 5) If you order in April, it's not necessary to pay now. a) You don't have to pay now. b) You mustn't pay now. c) You should pay now. d) You have to pay now.

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