1. A. It laid 15 eggs in total this month.

   B. It laid 50 eggs in total this month.

   C. It laid 25 eggs in total this month.

 2. A. On the other side of the road£¬a schoolboy was running.

   B. On the other side of the road£¬a schoolboy was walking.

   C. On the other side of the road£¬a schoolboy was studying.

 3. A. Hundreds of years later£¬people still read newspapers.

   B. Hundreds of years later£¬people still edit newspapers.

   C. Hundreds of years later, people still print newspapers.