It’s impossible for ____ few people to finish ____ a lot of work in only two days. 

 He said it was _____ impossible to buy the novel which was _____ worth reading.

____ to the surprise of the teachers, the naughty boy turned out to be the person who saved the dying girl. 

 Once he makes up his mind to do something, he will devote himself _________to it.

  The people here ________water their gardens because it rains so often.