1. Mary: She will be late, won't she?<br/><br/> John: Yes, I think so. / No, I don't think so.<br/><br/>2. Mary: She won't come, will she?<br/><br/> John: Yes, I think so. / No, I don't think so.<br/><br/>I think in 1 only "yes, I think so" and in 2 only "No, I don't think so" are possible. Am I right? or all possible?