问题
选择题
_____ Mom had asked Jack to close the window before he went out,______ he forgot to do it.
A．Though; /
B．Though; but
C．Till; /
D．Until; then
答案
答案：A
考查though的用法。句意“尽管妈妈让杰克出去前记得关窗户，但是他还是忘记了。”though不能与but连用。故选A。