----Are Mr. and Mrs. Wang living alone in the house? ----Yes, altough they have three sons,      of them live with their parents.

Mum gives me a dog for my holiday. _______ name is Lucky.

They found ­_______very hard to move the stone.

I think ______ necessary ______ to take more exercise.

---Why did _____ take Aunt Alice almost an hour to get home ? ---I don’t know . Maybe there was something wrong with her car .