At the moment nothing is certain about the project as there are many problems that need to be resolved.

It was an interesting question, but not one that needed to be resolved right then.

"There are a lot of issues that need to be resolved."

The difference will almost certainly need to be resolved in a conference committee.

There were things that needed to be resolved before I gave up my job.

The differences will need to be resolved in a conference committee.

This question is not new but now needs to be resolved.

Any problems there may need to be resolved by the people themselves as they so choose.

For this to happen, several problems need to be resolved.

However, before work begins, several very specific issues need to be resolved.