His father ________ for a week.

Did you get a ticket? —Yes. Otherwise I____ the concert last night.

the country leaders can lead them out of the financial problems, people are becoming more optimistic about the future of the country.

I didn’t see you at the meeting yesterday. Why —I a book at that moment.

This is _____ third year that China has taken part in the activity Earth Hour. But we hope we can try our best to make the earth ____better world.