第1个回答 2009-11-03
She has always been a very good student and has never been late for school before. However, she has not arrived today even after 20 minutes since class began.
What can be reasons for her delay?
---She might have overslept.
---She might have encountered heavy traffic jam on her way to school.
---She might have been ill.
---She might have been delayed by a wrongly-performed alarm clock.