根据短文大意,写出所给动词的适当形式。
Oxfam Trailwalker (1) ____ (be) one of Hong Kong's biggest fund-raising (筹款) events since 1981.
It (2) ____ (know) as Trailwalker before. It is organized by Oxfam Kong (3) ____ (raise) money for
helping poor people in Hong Kong and other parts of Asia and Africa. Trailwalker is held in November
every year . People over eighteen can group themselves into a team of four people and (4) ____ (join) this
walk.
Oxfam Trailwalker is a hard hike because you have to finish (5) ____ (walk) 100 kilometers in 48
hours. It (6) ____ (mean) you may have to walk two days and nights without sleep. The trailwalkers have
to walk through eight country parks and over twenty hills and mountains.
It is an excellent chance for people (7) ____ (learn) team spirit. All the team members must plan
everything together before the event. They need to walk together to finish the hike because only the team's
(8) ____ (finish) time will be recorded. It is necessary for them to support and help each other both before
and during the event.
You should plan what you (9) ____ (carry) everything with you, so it is useful to have support teams to
bring you food and drinks. Warm and dry clothes are also necessary to keep you comfortable and to support
development projects.
Why not try your best to help people in need? This (10) ____ (be) an experience you will never forget.

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