Can I come in? Could we open this window? May I ask you a personal question? Could I make myself a cup of coffee? Can we use dictionaries in the exam? May we answer your email next week? Can I open my birthday present now? Could I take a day off work tomorrow? http://500ab102e3079df093a4-ff8eeadd950d51fd1fc939dca75b3973.r47.cf1.rackcdn.com/assets_green.swf