Question

I am certain by no means ________ his word since he has prom

Answer 1

B

B　句意：我确信既然他答应捐一笔钱给穷人，他绝不会食言的。by no means(绝不)为表示否定意义的介词短语，置于句首时，其后面的主谓语要倒装，根据句意可知设空处需用一般将来时，故答案为B项。