The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can __ _ all foods are secure to us, but we are sure that the situation is turning for the better.
Peter _____ come with us tonight, but he isn't very sure yet.
Jenny _____ have kept her words. I wonder why she changed her mind.
_____ some of the juice—perhaps you'll like it.
The way of _____ enough money was to sell her hair.
_____ production up to 60%,the company has had another excellent year.