1 was - discovered
2 were - held
3 was - born
4 was - invented
5 is considered
6 are - used
7 is - located
8 is - spoken
9 been written
10 is - celebrated
1. was _ discovered
2. was _ held
3. was _ born
4. was _ invented
5. is _ considered
6. were _ used
7. is _ located
8. is _ spoken
9. been written
10. has been _ celebrated
1. was America discovered
2. were the Olympic Games held
3. was...born
4. was...invented
5. is considered
6. are...used
7. is Kiev located
8. is Thai spoken
9. been written
10. is Halloween celebrated
