My house is the one with a red roof on the street. It ____ and you can find it easily.

Was it in the factory _____ you worked five years ago ____ you met your wife for the first time?

The students are going to ______ a lecture on AIDS this Sunday. [ ]

mber of Hutongs in Beijing is decreasing, ______ they still attract tourists from all overthe world.

My phone is at home. I have to go back for it.— You don’t need to. You can use ____.