It has been 6 years since I learn English.

It is his first time to visit the  Expo.

They can't leave until they finish the job.

Many changes have taken place in Shanghai in the past 10 years.

It seems that he's very surprised about what you said just now.

Thank you so much for inviting me to attend the farewell which is held for Mr.Smith.

It has been 6 years since I learn English.

It is his first time to visit the  Expo.

They can't leave until they finish the job.

Many changes have taken place in Shanghai in the past 10 years.

It seems that he's very surprised about what you said just now.

Thank you so much for inviting me to attend the farewell which is held for Mr.Smith.