I caught a bad cold and had to stay in____bed.空中的正确答案是不用加的,为什么.When you are in danger,you should____

题目

I caught a bad cold and had to stay in____bed.空中的正确答案是不用加的,为什么.When you are in danger,you should_________.A.shout for help B.asking for help(正确答案是A,为什么?这两个词有什么区别）

答案

第一题：我得了重感冒,不得不卧病在床,stay in bed是卧病在床的意思
第二个空两个短语都可以,但是should是助动词,后面接的应该是动词原形,shout是动词原形,asking是动词不定式,所以选A