单项选择题
What apparently had happened，three years ago，was that Kate（）to a different building.
A.wentB.has goneC.had goneD.would go
单项选择题 His writing has improved but there is still （）for improvement.
单项选择题 By the time you arrive in Beijing.I （）for shanghai.
单项选择题 I decided to depend on myself.Therefore，I（）their offer to help.
