Написать предложения в present simple , present cont., present perfect., past simple., past cont., past perfect., 1)the cars are produced 2)the house is made of wood 3) the coffee is grown

Это очень легко. Достаточно знать форму их образования.

 1 are being produced

    had been produced

   were produced

    were being produced

    had been produced

Вроде так =) Не уверена насчет с Cont. Но в остальном вроде правильно. Удачи ^^~