Mr. Smith found that gas from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape .
My teacher's rich knowledge of science ______ my decision ______ study science.
There is reason to believe that most writers have difficulty in ______ the opening paragraphs of their papers.
When and where will it suit your ______ for our next meeting,Mr.Brown?
Many questions were asked,particularly ______ the cost of the new plan.
We ______ the job ______ five parts,and each man did one part.