A Write the verbs in brackets in the correct tense. 1. If the friends (not to go) in the USA, they (not to visit) Death Valley. 2. If they (come) to Death Valley in winter, they (be able) to see more. 3. If they (go) there, they (can) die of heatstroke. 4. If Martin (take) more than a liter of water, it (help). 5. If the rangers (come) ten minutes later, they (not to be able) to save him.