2013 NewCurriculum Question 24 Single-choice Differentiating 2013_NewCurriculum卷 (英语) 24. If we now to protect the environment, we’ll live to regret it. A. hadn’t actedB. haven’t actedC. don’t actD. won’t act Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →