（Tom's) sister (is) (a) artist.错误为（ ）改为（ ）ABC

（Tom's) sister (is) (a) artist.错误为（ ）改为（ ）ABC
Tom's是A
is是B
a是C
(She's) going to (plants) (a) small tree.错处为（ ）改为（ ）
She's是A
plants是B
a是C