1. The letters (will have been sent) in different towns by Monday.
2. The letters (are being sent) now.
3. The letters (are sent) every day.
4. My question (was not answered) last lesson.
1. The letters (will have been sent) in different towns by Monday.
2. The letters (are being sent) now.
3. The letters (are sent) every day.
4. My question (was not answered) last lesson.