Milk will turn sour soon on hot days ______ it is stored in the refrigerator．

I _______ think it’s a northern university So many restaurants serve northern food–That’s because the students here are _______ from the north

Ms.Lin has much ________ of teaching.She is a wonderful teacher.

_________the peace talk between the two countries will break down depends on your attitude.

Does your sister like________—Yes，you can see all kinds of clothes in her room.