问题
选择题
—Could you look after your sister, Tina?
—Sorry, mum. I______ my homework now. [ ]
A. am doing
B. will do
C. was doing
D. have done
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—Could you look after your sister, Tina?
—Sorry, mum. I______ my homework now. [ ]
A. am doing
B. will do
C. was doing
D. have done
答案：A