——Thank you very much for everything , You’ve been so helpful.—— ,Just let me know if there is anything else I can do for you.
Please excuse me _______ your letter by mistake.
After describing the planned improvements, she went on _______ how much they would cost.
The film star walked to his car, ______ a crowd of journalists.
_______ on time, this medicine will be quite effective.
When I handed the report to John, he said that George was the person _______.