1. They don''t have a map, so they get lost -> If they 2. In spite os his broken leg, he tried to save his wife -> Although his 3.Scientists have invented new devices to help people live a longer life. => New devices 4. Were you reading this book at 8 o’clock last Sunday?” She asked Ba  => She asked

1. They don''t have a map, so they get lost

-> If they had a map, they wouldn't get lost

2. In spite os his broken leg, he tried to save his wife

-> Although his leg was broken, he tried to save his wife

3.Scientists have invented new devices to help people live a longer life.

=> New devices have been invented by scientists to help people live a longer life.

4. Were you reading this book at 8 o’clock last Sunday?” She asked Ba 

=> She asked Ba if he was reading that book at 8 o’clock the Sunday before