My sister bought this pair( last mouth)对打括号部分提问

My sister bought this pair( last mouth)对打括号部分提问 按要求改写句子My sister bought this pair last month.（对划线部分提问,last m my sister bought this pair last month .这句话为什么不在时间前面加上介词on My sister bought this pair last month.Did she buy them here? 懂英语的请进But my sister bought this pair last month.下面一句是 Did sh 1.Jenny has （two） new sweaters.(对打括号部分提问） 2.(My sister Zhen He bought this pair of shoes last week.(对划线部分提问）划线部分是bought There were here (last Friday)对打括号部分提问 This is (a birthday card).对打括号的部分提问 对打括号部分句子提问This is ( a qilt ) I throw a ball (like this)对打括号部分提问 My name is {Wanglin.}对打括号的部分提问?