. It is a good idea to eat a lot of fruit and vegetables every day.

We should eat a lot of fruit and vegetables everyday.

2. We couldn't keep on cleaning the streets because of the heavy rain.

Because it rained heavily , we couldn't keep on cleaning the streets.

3. The garden party won't take place if the weather doesn't improve.

Unless the weather improves , the garden party will take place.

4. Both students and teachers can borrow books from the library.

The library lend books to both students and teachers.