Many fast food restaurants paint their walls red, play loud music and have hard seats_____ customers eat quickly and leave.
A:make
B:to make
C:made
D:making
美国前总统布什说过:“法国曾经是美国在世界上的第一个朋友,现在仍是美国不可侵害的朋友之一。”句中所指的“第一个朋友”与下列哪一历史事件有关( )
While we _______ football in the classroom, the teacher came in.