There koalas are___ Interesting.a.kind of b.kinds of c.kind

There koalas are___ Interesting.a.kind of b.kinds of c.kind


A
Kind of



This kind of machines___ in china.A.make B.are make C.are made D.is made
Why choose d to help me analyze


Because the predicate after "this kind of + noun" is singular, BC is excluded
Because this sentence is passive, so choose D



This kind of i_ can make noise.
Fill in an English word in the line


insects
insect