l never forget the day________ Liu Xiang won the gold medal, _________ has a great effect on my life.

In fact, more and more people ________ to live a greener, healthier and more environmentally “green life”

Is this a photo _____ your family

Mr Bush is on time for everything. How _______ it be that he was late for the opening ceremony?

He hasn’t slept at all for three days.____he is tired out.