Choose the alternative that best completes the blanks with ...

Read the text and answer the question. 

We saw the movie last night. 

Marjorie Fuchs and Margaret Bonner 

The year was 1912. The Titanic was a new, very large ship. People thought it _____ (to be) safe. But, on April 15, 1912, the Titanic hit an iceberg and _______ (to sink). More than 1,500 people lost their lives.

From the book Grammar Express Basic.