Practice Underline the correct verb form in the sentences below.
a. Thomas Cook organized / has organized the first tour in 1841.
b. Pathfinders wasn’t / hasn’t been the first to offer tailor-made holidays.
c. He worked / has worked in the travel industry since 1996.
d. When did you start / have you started working for Kuoni?
e. Customers became / have become demanding in the last few years.
f. The number of bookings fell / has fallen since the accident.
g. So far we had / have had a very successful season.
h. Visitors from the USA increased / have increased by 8 percent since last year.
i. We started / have started offering tours to Mexico two years ago.
j. Many operators put / have put their prices up lately.