If you listen to English programs every day, I’m sure you’ll _______ make progress in English.

-- Do you think it's a good idea to make friends with your students?--  _____  , I do. I think it's a great idea.

We have done half the work so far. _____, we’ll have finished it by December. 

The death toll of the quake in New Zealand is _____ 150, but officials say the figure won’t stand because they are still getting information in．

As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil．