--Can I tell my best friend about it?

---No. I don’t want anyone else to know. You _________ let it out.

A．mustn’t

B．won’t

C．don’t have to

D．don’t need to

优质菠萝的感官特征是______。

A．果形饱满

B．肉厚质细

C．色泽鲜艳

D．果味清香

E．果汁丰富