The phrase "all are contributing to" is correct and usable in written English.
It can be used when discussing collective efforts or participation in a particular cause or project.
Example: "In this initiative, all are contributing to the success of our community garden."
Alternatives: "everyone is adding to" or "all are playing a part in".
Most have their children in local schools, the vast majority of them have jobs here, and all are contributing to the betterment of our nation.
"What you're really hoping is that those natural habitats over all are contributing to reduced erosion and flooding from smaller, higher-frequency events," he said.
Physics, biology, economics and other disciplines all are contributing to the rapid growth of knowledge in this domain.
Education, training, weatherizing homes, and rehabbing public housing all are contributing to rebuilding the economy.
They will all be contributing to Strummer of Love, the festival that Lucinda is planning with Strummerville, the charity set up to keep Joe's spirit alive.
"All these things are contributing to the sense of urgency," she said.
Many thanks to all who are contributing to the conversation.
So on one hand he says jobless benefits cause people to be "selective" and not take jobs, yet, by looking for work at all, they are contributing to a higher unemployment rate.
All these different perspectives are contributing to the unprecedented challenge of developing a protective HIV-1 vaccine.
"The European Union has reduced greenhouse gas emissions considerably, and all the economic sectors are contributing to these efforts," said EU Climate Change Commissioner Connie Hedegaard.
All co-authors are contributing to a project funded by the National Institute for Health Research NIHR Health Services and Delivery ResearchcHS&DR&DR) programme (project number 12/64/118).
