Question

选择题 说理由

Who is the person -------- is standing at the gate?
A that B he C whom D who
He passed the exam this time,------ pleased his parents.
A it B which C this D who
He told us the things and person ------ he had been interested in.
A what B which C that D who

Answer 1

1. A
主句中已经有特殊疑问词who了，所以这里用关系代词that
2. B
非限定性定语从句，which指的是主句描述的这件事情。
3. C
先行词既有人也有物，关系代词用that

Answer 2

A 不能和前面的who重复。 B ,非限定性定语从句 ， 用which。 C 先行词既有人又有物 用that引导定语从句