— I'm leaving tomorrow.— Oh, what a pity! I won't be able to see you off. I __ a tele-conference the whole morning.
---Mary looks down today. What is up? ---Well, ____ happened between Mary and me is none of your business.
The poor man stood there, with his hands ____, ____ his eyes upon the dark cave.
Please put on more clothes. It is ___ that it will be a bit colder this afternoon.
Great changes have taken place in that school. It is no longer ___ it was 20 years ago, ___ it was so poorly equipped.
This book will show you ________ can be used in other contexts.