这个奖项如此荣幸且出乎意料——我惊讶得说不出话来。
This prize is such an honour and so unexpected - I ___am ___lost ___for ___words.
我如此愤怒,以至于很长一段时间都说不出话来。
I was so enraged that I ___was ___lost ___for ___words for quite a long time.
当他听到这个消息时,他感动得说不出话来。
When he heard the news, he ___was ___lost ___for ___words with emotion.