Another question on the differences between For and To

0Hi you,02br
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00I had problem on when to use For and To. Before running a search on the net, I thought it's a problem only for troubles non-native speakers, but I think I was wrong. Many native spearkers have the same problem, too. I searched the site to before asking the question to make sure it was not asked before.02br
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00Here are my questions. In each sentence, will you choose For or To? Please indicate your reasons.02br
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001. Therefore, all information workers must have superior intellect and learning ability for/to picking up the required job skills.02br
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002. Coastal cities will need to build or strengthen barriers for/to warding off rising sea levels.02br
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003. ...there are clear principles for/to deciding when a sense is instantiated in memory,...02br
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00Thank you0-