选择题 I thought it would be nice to play trumpet in the open air instead of in mysmall room ___I thought it would be nice to play trumpet in the open air instead of in my small room ____ days when the weather is nice.Ain B on C for C at答案+
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选择题 I thought it would be nice to play trumpet in the open air instead of in mysmall room ___I thought it would be nice to play trumpet in the open air instead of in my small room ____ days when the weather is nice.Ain B on C for C at答案+
选择题 I thought it would be nice to play trumpet in the open air instead of in mysmall room ___
I thought it would be nice to play trumpet in the open air instead of in my small room ____ days when the weather is nice.
Ain B on C for C at
答案+理由!谢谢!
选择题 I thought it would be nice to play trumpet in the open air instead of in mysmall room ___I thought it would be nice to play trumpet in the open air instead of in my small room ____ days when the weather is nice.Ain B on C for C at答案+
选：B on .
（在）天气好的日子,我认为在户外吹喇叭比在小房间里更有益.
on days：在...日子 （表某天）
例：
It peaks on days like Saturday.
星期六将达到高峰.
in days：在...日子里,（表持续时间）
例：
In days of yore,giants walked the earth.
昔日,有巨人在地球上行走.
when the weather is nice.（when不表持续时间）
所以排除A,in
从句意可以排除C for ,
at只有表达时间时只用于几点,所以排除 D at
个人观点,供参考
on
表示日、天用介词 on.
in 通常加 上下午、年份、月份
at 加具体时刻
大概是A