16. The computer program is a puzzle to me. The more I think of it, the more questions I think of _____.
-Does Bill do his new job well? -_______ his old job. I’m afraid there’s no hope for him.
It’s impossible for a person______ a sense of responsibility to succeed.
________ of the truth of the reports, he told his colleagues about it.
They wouldn’t agree to sell the house to us at the same price_______ they had promised,________ was rather disappointing.
_________ the road round to the right, the blind man asked a boy to guide him.