Not having worked out the program, ________ leave the office

I had just got up and was about to cook my breakfast _____ the telephone rang loudly, but it hungup _____ I could answer it.[ ]

more forests being destroyed, hugequantities of good earth _________ each year.

aoYu Island have been part of China’s territorysince ancient times, __________as important fishing grounds of Taiwan

He _____ football regularly for many yearswhen he was young.