I’m sorry, Bill. I _________ the book to you last week, but I was so busy that I forgot to do so.

It’s not a good idea to _______these old buildings in the city.

You can hardly imagine the once clear canal _____ so seriously polluted that no fish can live in it. [ ]

Many people who had seen the film were afraid to go tothe forest when they remembered the scenes____ people were eaten by the tiger.[ ]

It is reported that students from Xinhua Middle School planted trees on the hill.