4) Complete the sentences with your own ideas. 0. The book was useful because it was about my favourite writer's life. 1. It was an important day because ★★★. 2. The website wasn't user-friendly because ★★★. 3. Heavy rain made it impossible to ★★★ 4. The book was useless because ★★★. 5. The day was strange because ★★★.​