Choose the correct word. More than one answer is possible

Question 8: (1đ) [Báo lỗi câu hỏi]
Choose the correct word. More than one answer is possible.
That is the man who/which/whom helped me when I fell down in the
street.
So, James is the man whose/who/which son came on the school trip
with us?
The restaurant which/whom/that I went to last week was very
expensive.
The man whose/whom/that I am working for is always punctual and
hard-working.
This is the woman whom/whose/that Mary is sharing the room with.
Question 9: (1đ) [Báo lỗi câu hỏi]
Choose the correct answer.
Neil Armstrong was the first man
walked on the moon.
when
which
who
whom