You can go out when you've finished your homework. a parent and child I'm afraid you can't sit there. That table is reserved. a restaurant You may not start writing until I tell you. an exam You seem much better. You can stop taking the tablets now. a doctor's You may borrow no more than six books at a time. a library I'm sorry but you can't leave your suitcase there. It's in the way. a train https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_green.swf