1.I'm one of the boys() never late for school.

1.I'm one of the boys() never late for school.
A.that is B.who are C.who am D.who is
2.The weather turned out to be very good ,()was more than we could expect.
A.what B.which C.it D.that
3.Who is the man ()is giving the children a piano lesson?
A.who B.which C.that D.why
4.改错：I (A.never) met Julia again after (B.that) ,(C.that) was (D.a) pity.