Исправить ошибки в предложениях:
1 you needn't to enclose the invoice.1t will be sent separately.
2 the customer will be needed to pay import duty before he can get the goods.
3 when bacteria were found in the food plant, the government made the company
to shut down production.
4 they don't required to wear safety clothes in this area.
5 without just-in-time manufacturing, we would be permitted to hold large stocks
of components.
6 children are not allowed entering this area.