(天津市河东区201 4年高三二模考试)2. lf you live in the country or have ever visited there, ____are that you have heard birds singing to welcome the new day.
【考点】考察固定句式
ground
breathe
stop
So lost in their computers____that leaders at summer computer camps often have to force them to break for sports and games.
The police need some more evidence ________they can make a conclusion.