Farmers in China began to use tractors _______ cattle for farming work.
“ Can you read ?”Mary said ____to the notice.
Once your business because international, _____constantly will be part of your life.
When I handed the report to Hohn , he said that George was the person______.
The party was a success ,but we thought it a pity not ______you.
.He went to American _____some English as well as ____.