A.Fe2(SO4)3.
B.Fe2O3.
C.Fe(OH)3.
D.FeO.

A.25
B.75
C.50
D.250

A.1080 gam.
B.432 gam.
C.1350 gam.
D.864 gam.

A.Ag.
B.Zn.
C.Cu.
D.Au.

A.1,344.00
B.0,896.
C.2,240.00
D.0,448.

A.focusing
B.breaking
C.imposing
D.judging

A.didn’t he
B.don't they
C.did they
D.didn't they

A.has been upgraded
B.is upgraded
C.have been upgraded
D.has upgraded

A.on
B.in
C.from
D.with

A.the short the days become
B.the days become shorter
C.the shortest the days become
D.the shorter the days become