1. In the United States, Father’s Day is on _______ third Sunday in June.
A. a B. an C. the D. /
2. --- Do you know the boy________ is sitting next to Peter?
--- Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; nineth C. /; nineth D. which; ninth
3. --- Did you have a good time at Laura’s birthday party?
--- Yes, indeed. It’s several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
