Could you help me correct these sentences for me please? Which word would you choose?<br/><br/>1 What's the difference if you buy it now or later./What difference does it make if you buy it now or later.<br/>2 Who/what am I dealing with here?<br/><br/>3 He was in (my line of) sight/vision.<br/><br/>4 I'm here through/until wednesday.<br/><br/>5How long do they hold the shoes for?/put it aside for?<br/><br/>Thank you<br/>