—Did you ask your elder brother for help?—I need to. I managed it by myself.A.don't B.wouldn't C.didn't D.won't
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C解析试题分析：句意：--你请你的哥哥帮忙了吗？--没有必要，我自己就行。因为第一句用的是过去式，所以表示过去没有必要请哥哥帮忙。故选C。考点：考查动词时态的用法。
点评：本题难度适中。即学即练：—You haven’t said a word about my new coat，Brenda.Do you like it? —I’m sorry I ________ anything about it sooner.I certainly think it’s pretty on you.A.wasn’t saying B.don’t say C.won’t say D.didn’t say解析D。用过去时表达没能早说之意。