Supply the correct tense of the words given in each blanket.

1. Four countries _____have been visited_________ (visit) by John so far.
2. London ____has__________ (have) a population of eight million people.
3. The Statue of Liberty in New York is a monument which ___symbolizes___________ (symbolize) freedom.
4. Vietnam’s Independence Day ___is celebrate_____________ (celebrate) on September 09th.
5. We ____have visited__________ (visit) Sydney Opera House for several times.
6. Some activities _is being prepared____________ (prepare) to celebrate the lunar new year now.