Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово MAKE так, чтобы оно грам­ма­ти­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

Natural silk is an expensive kind of fabric that is used to make clothes. It is also very old. For 5,000 years, the Bombyx caterpillar _________________ silk fibers used by people.