--This is for you .---You ____have I don't know how to thank you.答案是needn't还是shouldn't
--This is for you .---You ____have I don't know how to thank you.
有的说答案是:needn't 你不用给我准备这个的 shouldn't 带有命令口气，人家给你一礼物，你不高兴的说“不准给我礼物”。有的说答案是:应该是shouldn't 不应该，needn't是不需要 到底哪个正确