1.A tornado has the shape of (something that is wide at the top and narrow at the bottom)  twistoccurpatha funnelsweptlikelyrip upwarned.
2. A tornado is so strong that it can (pull up)  a funnelrip upswepttwistoccurwarnedpathlikely trees.
3. The most (probable)  occurrip uptwista funnellikelypathsweptwarned time for a tornado is on a hot afternoon in spring'
4. The worst tornado (moved quickly and powerfully)  pathtwistsweptrip upa funnelwarnedoccurlikely through Missouri in 1925' killing many PeoPle.
5.A cloud forms a funnel and it begins to (turn)  rip uplikelypathswepttwistoccura funnelwarned.
6.With modern weather equipment people can be (told of something bad before it happens)  likelywarnedswepta funnelpathrip uptwistoccur.
7. A tornado has a narrow (line along which it moves)  patha funneloccurtwistlikelywarnedrip upswept.
8. In the United States, tornadoes (happen)  a funnelwarnedtwistsweptpathrip upoccurlikely mainly in the central states'