How many students are there in theclassroom–__________. They are all in the lab.

I’m going to buy a car. Any advice, Charlie– Well, it depends on ______. If money isn’t a problem, you can buy a BMW.

China is one of the countries ________ the Mekong River flows.

Ann, here is _____big tree . What can you see behind _____tree—Oh, _____elephant is standing behind it.

I still remember the day _____ I first came to college