I am ______ about the new model, and I firmly believe that there will be a good market for it.
90 % of the debts _______ so far.
________cash crops will be produced next year is not yet decided.
He is ______ to come back tonight. Then we’ll have a small party.
As we all know, Jack is experienced _____ the problem of this kind.
I could have helped him out, to tell the truth, I _____ too busy.