Question

you're the only person……I've ever met……could do it

Answer 1

You're
the
only
person
______I've
ever
met
______could
do
it.
　　A.
who
B.
whom
C.
whom
D.
who
　　解析：先行词person后有两个定语从句，第一个从句省略了关系代词whom.因为，
whom作从句中met的宾语，可以省略。第二个从句who
could
do
it.who在从句中作主语，不可省略。
　　答案：D

Answer 2

You
are
the
only
person
I've
ever
met
who
could
do
it.
You're
the
only
person
(whom)
I've
ever
met
who
could
do
it.
你是我遇到过的人里面唯一能做这个的
第一个whom是可以省略的,
作为宾语补足语
第二个who在从句里做主语,
指代"the
only
person",
不能省