Sentence examples for cannot be optional from inspiring English sources
Use of SFA cannot be optional.
Preserving the efficacy of antibiotics and protecting human health cannot be optional for the government.
Transparency cannot be an optional extra.
"Putting victims' rights in law sends a clear message to police, prosecutors and the courts that addressing the needs of victims is central to their work - it cannot be an optional extra".
If you want to incentivize someone to write a review it must be optional, it cannot be a mandate and there surely cannot be penalties for not providing one as per the Amerifreight example.
The $45 card will be optional and cannot be used for air travel.
We clearly verified that such a procedure cannot be considered as optional because of the high amount of polymeric compounds released by the depletion column that strongly interferes with the MS analysis by suppressing peptide ionization.
Ensuring effective and sufficient social transfers are in place cannot be treated as an optional extra to be addressed only when better economic conditions allow," he said.
Such an optional arrangement cannot be the basis for a postponement of an examination if three of a student's final examinations would thereby acquire "consecutive" status.
Another area for improvement could be the placement of relevant information where it cannot be skipped, rather than on optional cards, like the 'expert comment', which can be used at the student's discretion.
