问题
选择题
—Is this your pen?
—Yes, ________. [ ]
A. this is
B. it is
C. it's
D. it isn't
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—Is this your pen?
—Yes, ________. [ ]
A. this is
B. it is
C. it's
D. it isn't
答案：B