Complete the following sentences using suitable pronouns:

Exercise 5 . Complete the following sentences using suitable pronouns:
1. Raju complained to the teacher. _________ bicycle had been stolen
2. Where is Rohan ? I haven't seen _________  in several days.
3. The girls are playing in thw garden . _________ look very happy . 
4. Ihad invited all of my friends but none of ________ turned up .