Hello, teachers.<br/><br/>I'm studying causative verbs and I have two questions.<br/><br/>1) Is it impossible to use "let+~ing"?<br/><br/> Since she wished, I <b>let</b> her <b>watching</b> TV.<br/><br/>2) Does "<b>having+~ing</b>" have the samemeaning of "<b>keep+~ing</b>"?<br/><br/> (a)She had me waiting for a long time.<br/><br/> (b)She kept me waiting for a long time.<br/><br/> Do (a) and (b) express the same meaning?<br/><br/>Please answer two questions. Thank you for reading this.