All of the students were ______ by the ______speech given by the     headmaster.

    that the government can lead them out of the finacial crisis, people are optimistic about the future of the country.

Overpopulation is a terrible threat to the human race.Yet it is probably ____ a threat to the human race than environmental destruction.

I’m sure that if you make good use of your ____ time, your English will be improved in a short time.

The MH370 incident has cast a giant shadow over travel to Malaysia for many Chinese.    Another large travel agency, China International Travel Service Head Office, has seen a ____ drop in consumers signing up for tours to Malaysia