Who was it _____ saved the drowning girl？

Sometimes _______turns off the lights in the classroom because every body thinks somebody will do it.

 A gift made by one’s own hands is better than ______ bought in a shop.

---Tom, supper is ready.----I don't want to eat____________ ,Mum. I'm not feeling well.

I don’t think ____ possible to master a foreign language without much memory work.