554. Please make an appointment with my secretary. 请跟我秘书定个见面时间。　

553. Please call me before you come. 你来之前请打电话。　

552. He phoned to cancel the meeting. 他打电话来取消会议。　

551. You can reach me at 6609823. 你打电话6609823就能找到我。　

550. I can come any time except Sunday. 除星期天外我都能来。　

549. I have an interview this afternoon. 我今天下午有面试。　

548. So you'll come then. Please phone in if you can't make it.　

那么你就那时来，如果来不了，请打电话给我。　

547. All right. 好吧。　

546. From 4 to 4:30. 四点到四点半。　

545. At what time? 什么时间？