请求高人解决三道英语语法题
请求高人解决三道语法题
1.She_____ her hairstyle in her hometown before shi came to Chongqing for a better job.
A.changed B.has changed C.would change D.was changing
2.Whthin about 30 years from now,the first people from Earth___ on Mars.
A.will land B.have landed C.had landed D.will have landed
3.She____ in this school for the past 10 years.
A.was teaching B.had been teaching C.would teach D.has been teaching