The main issue at the APEC meeting was a climate-change plan _____ by Australia’s Howard and backed by Bush.

after a long walk,Tom called and said he couldn’t come to the party[ ]

Who did the teacher______ an article for the wall newspaper?[ ]

u happy with your new computer—– No, it is _______ me a lot oftrouble.

The goal of a “competition” may simply be ______ fun and enjoy the excitement of trying something new. [ ]