第1个回答 2014-12-14
1、I go to school by bus everyday.2、I went to school by bus yesterday.3、I will go to school by bus tomorrow.4、I am doing my homework.5、I was doing my homework when she came in.6、I said I would be a nurse.7、I have been there for five years.8、I had finished my homework before she came in.9、I have been sitting here all afternoon