问题
选择题
—Where is Jack?
—He _____the reading-room. [ ]
A. have been
B. has been to
C. has gone to
D. has been in
答案
答案：C
搜题请搜索小程序“爱下问搜题”
—Where is Jack?
—He _____the reading-room. [ ]
A. have been
B. has been to
C. has gone to
D. has been in
答案：C
、
、
……
草图
；如果不是直线，可考虑是否存在
，
等关系。