选D
on doing,.一..就...
home 是副词,前面不加介词at
On arrivinghome ,he began to do this homework.
翻译：一到家,他就开始做作业.
---- arriving ----- home ,he began to do this homework. A.on:at B.With:in C./:at D.On:/
---- arriving ----- home ,he began to do this homework. A.on:at B.With:in C./:at D.On:/
为什么前面要用On?
为什么前面要用On?
英语人气：342 ℃时间：2019-12-09 21:46:11
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