Do you know the reason __ she is so upset? * which
why
that
Winter is the time of the year __ many people suffer from flu. *
why
that
when
I remember the day __ I went to school. *
where
when
who
The person in the house next to mine knows someone __ met the King. *
who
where
that
There is an old television program called: '__ wants to be a millionaire?' *
Which
Who
What
We will visit the castle __ the kings lived. *
who
why
where
The school __ I study is near my house. *
where
what
who
I don't understand a word __ you are speaking about. *
that
who
whose
Did you meet the lady __ uncle works in the reception? *
who
when
whose
I can’t understand the reason __ you have been late for work. *
why
what
whose
I'm looking at the photograph __ you sent me with your email *
whom
why
which