— Why didn’t you come to Mike’s birthday party yesterday?— Well, I ____, but I forgot it.
I can never forget the days _____ we worked together and the days ______ we spent happily together.
There are six boys and two girls in the classroom; that’s eight _______.
Who is that young woman ______ is standing over there?
You should not go rafting ________ you know how to swim.
You can ______ this car with that one; then you will see which one is better.