题目内容
21、We're selecting ten causes ― from supporting poor families ________ the environment ― and giving you a chance to vote for your favorite.
A. to save B. to saving C. saving D. saved
试题答案
21、B
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题目内容
21、We're selecting ten causes ― from supporting poor families ________ the environment ― and giving you a chance to vote for your favorite.
A. to save B. to saving C. saving D. saved
试题答案
21、B