单选题 With the price of oil (goes up), the economy of (oil-producing) countries is (expanding) (at a high rate).
  • A. goes up
  • B. oil-producing
  • C. expanding
  • D. at a high rate


【正确答案】 A
【答案解析】分词用法错误，应改为going up。with引导的伴随状语，用动词的现在分词形式。