John is a creative boy. He had a great _____ in yesterday’s speech competition.

hang once taught in a remote village in Anhui province as a volunteer, which was ______ only on foot.

_ unsolved, the problem of foodsafety may lead to more serious results

_____we promise continuous increase in rural incomes_____improve the whole people’s well-being

Research shows that teenagers ________ talk about their day with family members at the dinner table are less likely to engage in high-risk behavior.