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? ? 活學(xué)巧練 ? 6. My sister is very interested in Tibet and she often says nothing can prevent her from ________ there for a trip.(go) ? 7. The rain prevented us ____ going on a trip. ? A. to B. from ? C. of D. with ? 8. Vitamin C is supposed to ____ colds. ? A. spread B. prevent ? C. refuse D. choose going B B 。 【教材 P62】 ? 重點突破 pr event 的用法 eg. These rul es a re i