Exercise 1: Rewrite the following sentences using “It was not until…that…” 1. She didn't become a teacher until 1990. It was not until …………………………………………………………………………………………… 2. He didn't know how to swim until he was 30. It was not until …………………………………………………………………………………………… 3. They didn’t begin to learn English until 1980. It was not until ………………………………………………………………………………………….. 4. The boy didn't do his homework until his father came home. It was not until …………………………………………………………………………………………… 5. The football match didn't start until the lights were on. It was not until ……………………………………………………………………………………………..