There are ________ of students in our school who will go to Shenzhen for the summer camping．________

There are ________ of students in our school who will go to Shenzhen for the summer camping．________ of the students ________ about 300．

A.a great number, The number, is

B.the number, A number, are

C.numbers, The numbers, is

D.a number, a number

答案及解析： A