问题
选择题
.
Tom is reading a book __________ his brother is watching TV.
A．while
B．though
C．however
D．but
答案
答案：A
搜题请搜索小程序“爱下问搜题”
.
Tom is reading a book __________ his brother is watching TV.
A．while
B．though
C．however
D．but
答案：A