Transform the source sentence 'Lina has finished the safety check.' into a yes/no question. Rewrite the exact fragment 'Lina has finished the safety check' as a complete question: ___

Բացատրություն

The statement already contains has as the perfect auxiliary, so question formation only moves it ahead of Lina. Supplying does would be incompatible with the present perfect and would disrupt the participle structure.