问题
选择题
—What ______ when I came in just now?
—Nothing. [ ]
A. do you do
B. did you do
C. are you doing
D. were you doing
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—What ______ when I came in just now?
—Nothing. [ ]
A. do you do
B. did you do
C. are you doing
D. were you doing
答案：D