1. His misunderstanding of language was the primary cause of his other problems.
2. Accidents are still the number one cause of premature death for Americans.
3. Investment could dry up and that could cause the economy to falter.
4. This was a genuine mistake, but it did cause me some worry.
5. Premature birth is the main cause of perinatal mortality.
6. She says that legalising prostitution will only cause problems.