She＿＿＿＿＿＿＿＿the film. She knows nothing about it. 

If the American government      the expert’s suggestion, the world economy would not be in such a mess now.

A foreign language like English is difficult to learn, so you ____________ work too hard.

As a graducate in computer science, he ___ to work out the problem.

Tom’s boss told Tome that if he worked hard, he _____ have a rise.