The book is primarily ___________ Soviet-American relations during the Cold War.
――Look! Somebody ____the sofa..――Well, it wasn’t me. I didn’t do it.
It suddenly occurred to him___ he had left his keys in the office.
The Smiths don’t usually like staying at __ hotel, but last summer they spent a few days at a very nice hotel by ___sea.
There .
the plane.