Помогите пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! For questions 15, change these active sentences into passive

Помогите пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! For questions 15, change these active sentences into passive sentences. Example: They manufacture most of the parts in China. Most of the parts are manufactured in China. 1 They transport the goods to the factory by rail. 2 We keep all the contracts in a locked cabinet. 3 They sell the detergent in 500 ml bottles. 4 At the end of the day, they take the finished products to the storeroom. 5 We give a welcome pack to each new customer.