You had better ___(hand)in your exam paper as soon as you finish it.

问题描述:

You had better ___(hand)in your exam paper as soon as you finish it.

hand
填动词原型

hand
had better + 动词原形

hand in,表示交卷的意思

hand

hand,hand in是短语,意思是上交,用原形就可以了

直接填hand就行了,you had better 的句型后面接动词原形,这里的hand 即是名词又是动词,本句中hand in 是短语:上交的意思。
全句的意思:你最好尽快完成试卷并交上来!·
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