When we got to the top of the hill,I could feel my heart _____.A._英语解答

When we got to the top of the hill,I could feel my heart _____.
A.beat B.beating C.beats D is beating 我想问为什么不是D?什么时候加 is 什么时候不加?

人气：237 ℃　时间：2020-01-14 16:38:46

解答

正确答案是B 因为FELL是感官动词,后面要加ING 的