Every morning my father walks or runs _____an hour in the park.
When you see the sign “EXIT”, you know you can ________ from here.
---- How much did your bike _______? ---- I ________400 yuan for it.
Remember not to speak ________ when we are in the reading room.
Listen! They ________ about the earthquake in Japan. Let’s join them.
Most of English teachers in middle schools are ________ .