they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help. ...
(题文)What does the woman mean? A. She will go on working hard this afternoon. B. She will have some rest this afternoon. C. She will take an exam this afternoon. B 【解析】M: You must have a rest, Samuel. You really have been working too hard these days. Couldn't you rest ...