1. _____ (turn) left, and you will see a building. That’s the hospital.
2. It was required that no smoking ________ (allow) in the library.
3. Please make sure that all the lights ________ (turn) off when you go out.
4. This kind of door _____ (lock) easily.
5. He ____________ (work) hard since 8 o’clock this morning. We all think he needs a rest.
