13.--EXcuse me, can I ask you somequestionsAA.Sure,go aheadB.Congratulations!C.That's~right.D.That's a good idea.14.-Ihave difficulty working out theproblem by myself. Could you help me?A.It's~my pleasureB.With pleasureC.No,I couldn'tD.Not really15.-Could you please take out the rubbish?B. But I want to have a cup of water first.A.Thank you B. Sure, no problemC.You're welcome D.No,Ican't