—Oh, sorry! ____ is left in my phone, either.
— ____ is OK. I'm free today and tomorrow.
— Some people may say no, but many experts think we should use ____ in a good way.
—No,I won't. I know that ____ of us is perfect (完美的).
—____. I'll join the sports club.
—____ of us can do it. We are busy doing homework.