--- May we leave the classroom now?

--- No, you ____________ . You ____________ to leave before the bell rings.

A．mustn’t, are allowed

B．don’t have to, are allowed

C．needn’t, aren’t allowed

D．can’t, aren’t allowed

银行贷款筹资是公司收购较常采用的一种筹资方式。但是，向银行申请贷款一般有比较严格的审批手续，对贷款的期限及用途也有一定的限制。( )