Many cities have decided to (wide) ______ the streets to solve the serious traffic problems.

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问题 Many cities have decided to (wide) ______ the streets to solve the serious traffic problems.

选项

答案widen

解析 本题考查词性转换。decided to do表示“决定做…”,动词用原形,故应将wide (adj.宽阔的) 变为widen (v.加宽) 。
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