综合练习三Class_ Grade 5 Name_ Number_1. There are _ days in a week.A. the seven B. seventh C. the seventh D. seven2. I think that the _ century (世纪) will bring us more hopes.A. twenty-one B. twentieth-first C. twenty-first D. twentieth-one3. - How many students are there in your school?- _ the students in our school _ over two thousand.A. The number of; is B. The number of ; are
