26.If you want to succeed ,you must work hard and ____you should be sure of success

Did you read the book Who Stole My Cheese—Yes. I___________it twice while inuniversity.

I went to Tom’s birthday party last night. A lot of my good friends were there too.— It ________ fun.[ ]

Only when _______ possible to settle the problem.

The film is such __ wonderful science fictionfilm that I want to see it _______ second time.