(2013·浙江高考)Half of ________ surveyed in 16 countries say they go first to their closest friend to share their deepest wishes and darkest fears.

When you go outing with your sisters, you must see to ________ that they are safe.

We’ve been looking at houses but haven’t found ______ we like yet.

All of us want very much to see these amusing  movies，especially      you referred to just now．

---Are the Smiths living in the house alone ?--- Yes, although they have three sons, _____ of them live with their parents.