Nongfu Spring, one of China’s biggest bottled water companies, was reported ________ to meet national standards, and its chairman held a news conference in Beijing on May 7.
We didn’t feel surprised when we found he fixed his eyes on the food with a(n)________expression on his face,for we knew that he hadn’t eaten anything for 3 days.
With his attention________on the shops along the roadside,he knocked an old man down while riding to school. A concentrating B.concentrated C.to concentrate D.concentrates 答案 B 解析 考查词组,故选B项。