----- Isn’t it a surprise that I happened to meet Emily at Doris’ birthday party last weekend?----- If my memory serves me correctly, you _____ each other for exactly three years.
While he was at____ college, he took part in political activities, and was soon throw into ____ prison.
I was in the baths , ______ I didn’t hear the telephone, which was ringing several times.
She was so _____ in her job that she didn’t hear anybody knocking at the door.
Our professor told us that salt water _____ at a lower temperature than fresh water.
Nowhere else in the world _____ more friendly people than in China.