dare如何否定The students in the classroom -D----- not to make so

The students in the classroom dare not make so much noise。(make前不用to)。The students in the classroom do not dare (to) make so much noise。(make前to可有可无)。 再问： 这题出的有问题么 ？ 再答： The students in the classroom _D_____ not to make so much noise。 a。 need b。 ought c。 must d。 dare 有问题， 题干中make前的to应去掉。