so little __ about stock exchanage that the lecture was completely beyond me.

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 known
Tom __ more than twenty pounds for the dictionary.
A.spent B.cost C.pay D.took
The ability __ is very important for any speaker.
A.to hear clearly B.to being clearly heard C.to hearing clearly D.to be clearly heard
how 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 you
let'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