单项选择题
A.grasps B.grains C.grounds D.grants
A.He was interested, but found them too expensive. B. He was fascinated, and determined to buy them. C. He wasn’t attracted, and wouldn’t buy them. D. He wasn’t sure, so he would rather wait and see.
A.Air travel should be avoided if possible. B. Air travel is not as problematic as people believe. C. It is too early to say that air travel has caused damages. D. It is hard to decide whether we should continue air travel.