1) the soup just (make) help yourself. 2)toyotas (manufacture) in japan. 3) gold (discover) in eastern canada. 4) i just (tell) that my house (knock down) next month. нужно.

1) The soup has just made help yourself.
2)Toyotas are manufactured in Japan.
3) Gold was discovered in Eastern Canada.
4) I have just told that my house will be knocked down next month.