ng is save some money, there still exist risks．

下面括号里的两种表述分别编为四组，恰当的一组是 （1）赵院长总保持着学者的风度，（①脊背挺直，面容和蔼②挺直的脊背，和蔼的面容），金丝眼镜后面一双含笑的眼睛，头发梳理得很整齐。（2）细碎的阳光透过窗玻璃洒进来，给人一种迷离的感觉。（③神思袅袅④袅袅神思）遂飘到了瓦尔登湖。

I’m sorry．I ___________ at you the other day． — Forget it．I was a bit out of control myself．

If you ______ with your classmates, you will surely get the same work done far better.

Tom, what’s the matter with you You look so wornout!–Nothing serious. I ____ my new house all the day andI am afraid I won’t finish until tomorrow afternoon.