Boy: Mum, when are you and Dad going to see our school play?Mum: Let me see the times. Hmm. I can’t make it on Thursday, because I’m going to work late.Boy: And don’t forget that we’re going to take a trip to Beijing on Sunday.Mum: I know. Sunday is no good either. Dad plays tennis on Friday, so we can only see the play on the next day. By the way, let’s go to the earlier show. Then we can come home early.Boy: OK. I’ll get the tickets for you and Dad tomorrow.