Change the phrases into passive voice:
1) to produce hightech equipment -
2) to develop new products -
3) to process raw materials -
4) to stock the shelves -
5) to plan the work schedule -
6) to determine the sequence of operations -
7) to serve customers -
8) to paint the walls -
9) to assemble the cars -
10) to build the plant -
11) to cut hair -
12) to make furniture -