-I remember you were a talented pianist at college. Can you play the piano for me? -Sorry, I the piano for years. A. don’t play B. wasn’t playing C. haven’t played
There were _________ doctors, so Dr Norman Bethune had to work on his own.
My little brother caught a cold, ________ he didn’t wear warm clothes yesterday.
I couldn’t work out this problem ________ my teacher helped me.
_________ my mother was washing clothes, my father was reading books.
When the first ______ came to the US, they were hungry as they have nothing to eat.