We must finish our homework in half an hour.
就划线部分提问
We must finish our homework (in half an hour).
你必须在去留之间做出一个选择.
You must ____ _____ _____ between leaving and stay.
我爷爷既喜欢吸烟也喜欢喝酒
My grandfather likes drinking ___ _____ _____ smoking