The number of students in our school about 30 000 and them study hard.
| A．is;a large amount of | B．are;a number of |
| C．is;large amount of | D．is;a large number of |
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The number of students in our school about 30 000 and them study hard.
| A．is;a large amount of | B．are;a number of |
| C．is;large amount of | D．is;a large number of |
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