1. The quality of the product was substandard, with many defects and flaws.
2. The substandard workmanship of the contractor led to multiple issues with the building.
3. The teacher was disappointed with the substandard performance of the students on the exam.
4. The restaurant received a low rating due to its substandard food quality.
5. The substandard conditions of the apartment made it difficult for the tenants to live comfortably.
6. The company received complaints from customers about the substandard customer service they experienced.
7. The substandard equipment caused delays in the construction project.
8. The substandard materials used in the manufacturing process resulted in a faulty end product.
9. The substandard training of the employees led to a decrease in productivity.
10. The school was criticized for providing substandard education to its students.