You can feel your heart ____ when you are in a nervous state.

问题描述:

You can feel your heart ____ when you are in a nervous state.
A.beating
B.beat
C.to beat
D.being beating

A
feel感官动词,feel ..do(是不带to的动词不定式) / doing
feel ..doing 感觉到正在怎么样(某个动作正在发生)
因为后面有when you are in a nervous state 时间状语从句,即在某一时间点某个动作正在发生,因此用doing