Grammar Quiz 30 1. The pair of scissors _____ on the table. is are 2. One of the cars _____ red. is are 3. Measles _____ potentially a very serious illness. is are 4. Mathematics _____ her best subject at school. is are 5. The police _____ investigating the case. is are Time's up Grammar Course EnglishFest Daily Grammar Quizzes Other Quizzes