In the end , he turned ______history teacher, who had______ good knowledge of history, especially ______ history of ______Ming Dynasty.

John is to attend the meeting _______ the manager, who has come down with a bad cold

The students areat volleyball.They all play volleyball.

Last term our maths teacher set so difficult anexamination problem ______none of us worked out.

Would you like to gofor a picnic to enjoy the fresh air outside this weekend — __________. It will be a funny day.