问题
选择题
—_____ you _____ the window?
—Yes, I am.[ ]
A. Is, cleaning
B. Do, cleaning
C. Are, cleaning
D. Do, clean
答案
答案：C
搜题请搜索小程序“爱下问搜题”
—_____ you _____ the window?
—Yes, I am.[ ]
A. Is, cleaning
B. Do, cleaning
C. Are, cleaning
D. Do, clean
答案：C