初3的英语题

1.“What_____a knife_____(make) of?" "It _____ _____(make) of metal and wood."

2.These kinds of machines _____ _____ (invent) in China long time ago.

3.This kind of cars_____ _____(produce) in my father's factory.

4.The kids should _____ _____(devide)

1.is made is made 2.were invented3.are produced4.be devided