1.Can you see the train?
2.Does the waiter smoke cigarettes?
3.Do the waiter smoke cigarettes?
4.Does the dog sleep under the table?
5.Do the boys bathe in the sea?
6.Is Mr. Priestley well-dressed?
7.Does he generally wear a brown suit?
8.Is the earth moving around the sun?
9.Are the stars a long way from earth?
10.Is the telephone on the desk?
12.Are the windows open?
13.Do the windows stand open?
14.Can he open the windows?
16.Does he open the windows?