皮卡底盘的suv 越野车:After the teacher came in,the class _____.

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After the teacher came in,the class _____.
A.got down to work B.got down working
C.went down to work D.went down workong

A.got down to work
D.went down workong干扰很大,它可理解为继续干原来一直在干的事(go on doing )
但这样的话与题意不符,应该是”老师走进来后同学们才开始干什么.因为get down to 接名词或者动名词,而work的名词正好写出来还是work ,"开始做...事情".所以选A

A got down to
要注意,get down to 接名词或者动名词

而work的名词正好写出来还是work

"开始做...事情"

比如 开始钓鱼---
get down to fishing
就不能用get down to fish

因为fish只能做动词 明白了么 呵呵

A.got down to work

got down to
静下心

D