问题
选择题
—— Why? Tom, your shirt is so dirty!
—— Mum, I ＿＿＿＿＿ my storeroom downstairs。
A．cleaned
B．have worked
C．was cleaning
D．have been cleaning
答案
答案：D
现在完成进行时表示从过去某时到现在一直在进行的动作。
搜题请搜索小程序“爱下问搜题”
—— Why? Tom, your shirt is so dirty!
—— Mum, I ＿＿＿＿＿ my storeroom downstairs。
A．cleaned
B．have worked
C．was cleaning
D．have been cleaning
答案：D
现在完成进行时表示从过去某时到现在一直在进行的动作。