Going for your vehicle license?
Check out Theorytest.co.nz for free NZ Road Code practice tests.
These tests don’t seem to cover motorcycles specifically but 95% of the real test is based on the Road Code and only 5 or so questions are specific to motorcycles.
That site doesn’t have the official questions. You either need to look at http://www.drivingtests.co.nz or the NZTA list http://www.nzta.govt.nz/resources/roadcode/motorcycle-road-code/theory-test-questions/