so little -- about stock exchanage that the lecture was comp

so little __ about stock exchanage that the lecture was completely beyond me.A.I knew B.I had known C.did i know D.was i I knownTom __ more than twenty pounds for the dictionary.A.spent B.cost C.pay D.tookThe ability __ is very important for any speaker.A.to hear clearly B.to being clearly heard C.to hearing clearly D.to be clearly heardhow long do you think __ to finish this urgent task.A.it will take you B.did it take you C.will it take you D.it to take youlet's buy our tickets while i still __.A.a little money to leave B.a few dollars left.C.little money left D.few dollars to leave