1) Before he came to New York, he (work) [?] at the Office at Geneva..

2) Before I traveled to Cambodia, I (see: negative) [?] the great Angor Watt temple.

3) By the time I arrived at my new duty station, most of the office staff (be: already) [?] there for several months.

4) When I arrived at the office, the meeting (start: just) [?].

5) Before I had the chance to travel, I (want: always) [?] to see other places.

6) Prior to the arrival of the aid workers, the local people (receive:negative) [?] sufficient help.

7) Before the roads were repaired, it (be) [?] very difficult to drive a vehicle to the remote villages.

8) Before 1949, the United Nations Organization (exist: negative) [?].