1 . Complete the sentences with the correct forms of the words in the box.

expand            overcome            estimate          generate          extension

1. The school board plans to have a(n)_____________________ built to the library.
2. The new film______________________ a lot of excitement, and ticket sales were way beyond our expectations.
3. Unable to______________________ his shyness, he stood there without saying anything.
4. Foreign trade______________________ greatly in the past few years.
5. It ______________________that the project will last more than ten years.