问题详情

What does Margherita say about presenting a show？
A．h is essential to keep in mind what is going to happen next.
B．It is more complicated than she had previously thought.
C．The ability to add and subtract is the most important requirement.
D．The contend of a show is sometimes changed suddenly.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！