–Big animals can be a lot of trouble. Maybe you should get a small pet, like a goldfish.--______.
-----I am going to have a test next week. -----__________!
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.