( ) it or not ,his discovery has creted a stir in scientific circles

问题描述:

( ) it or not ,his discovery has creted a stir in scientific circles
A believe
B to believe
C believing
D TO BE BELIEVE
to do 不定式 是 to believe 还是 to be believe 为什么还有个be
这句话的意思?选什么 为什么?
翻译 讲解.

believe it or not 信不信由你
这是个祈使句