On Oct. 29, the famous Chinese pianist Lang Lang was named as United Nations Messenger of Peace, ________ means he will help promote(促进) global education.
He ______ English for six years by the time he takes his examination.
George has arrived, but I did not know he ______ until yesterday.
It ______ six years since they last saw each other.
Look at these clouds. ______.
-- Could you give these books to Mr. Mackintosh? -- Certainly, ______ him about something else in any case, so it won't be any bother.