Question

C Fill in the gaps with who, which, where, why or when. 14 Do you know the reason _____ she is so upset? 15 The library is a place _____ you can borrow books. 16 The day _____ you saw me I was feeling sick. 17 That's Peter, the boy _____ has just arrived at the airport. 18 What did you do with the money _____ your mother gave you?

Answer 1

1. why. 2.where. 3.when. 4.who. 5.which.
1.Почему? причина. 2.Где? место. 3. когда? время. 4.кто? персона,человек, существо. 5.Которые? предмет (деньги которые она дала). 
 =)

Answer 2

14. Do you know the reason why she is so upset? 15. The library is a place where you can borrow books. 16. The day when you saw me I was feeling sick. 17. That's Peter, the boy who has just arrived at the airport. 18. What did you do with the money that your mother gave you?