--_______ bike is next to my car? -- Oh, it’s Sonia’s, it’s a nice one.

 —Do you know __________ this dictionary belongs to? —Let me see. Oh, it’s __________. 

Don’t forget to brush your _________／ti: θ／before you go to bed. 

--- What’s wrong with my son, doctor? --- ____________ serious, just a slight cold. He’d better drink some water.

Helen has two sisters and a brother. Her brother is working, but _________her sisters are still at school.