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问题: be certain to 用法

1 Your dream is certain __ in the near future.
A to realize
B to have been realized

2 Irish wedding are almost certain to __ in this way for generation.
A be celebrate
B have been realized

解答:

答案:1 A.2.B.理由:1.be certain to do(表将来).2.be certain to have done(表过去).第一句中有in the near future.第二句中有for generation(已经几代)