____ to hospital in time, the wounded soldiers were saved at last. 

We have finished the most of our work so far, and the rest _____ on time.

 --- Each of the students, working hard at their lessons, ______ the book. --- So have I.

What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology.

When I jumped into the river, the water ___very cold.