Hi everyone, <br/><br/>How can I make a question for SINCE clause?<br/><br/>For example,<br/><br/>"I haven't seen her since Monday."<br/><br/>So the question will be: How long haven't you seen her?<br/><br/> OR: When haven't you seen her? <br/><br/>Can you pls help me figure out this problem. <br/><br/>Thank you in advance and best regards!