Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.
They failed to finish the project before the deadline. I regretted __________.
If the rain keeps falling, it will __________ our whole plan.
As is reported, the floods happening in Thailand __________ thousands of houses and killed many people.
In the countryside, wood can __________ a fire.
We will be given a(n)__________ to ask questions at the end of the lecture.