问题
选择题
Jim _____ on the computer when his father returned home.
[ ]
A. works
B. worked
C. was working
D. is working
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Jim _____ on the computer when his father returned home.
[ ]
A. works
B. worked
C. was working
D. is working
答案：C
