1. the famous sydney opera house __has served___ as an arts centre since 1973. ( serve)
2. there are about 750 milion english speakers in the world , and this number ___will increase_ fast (increase)
3. the statue of liberty in new yorl is a mounument which ____symbolises__ freedom .(symbolise)
4. england , scotland , wales,and northern ireland together __form___ the united kingdom.(form)
5. America __has celebrated__ thanksgiving Day on the fourth Thursday of November since 1864.
6. New Zealand_____is___ divided into the North Island and the South Island. (be)