如何判断是of itself 还是 by itself?40.When I was about to go out,the door opened ___.A.of itself B.by itselfC.oneself D.for itself

如何判断是of itself 还是 by itself?40.When I was about to go out,the door opened ___.A.of itself B.by itselfC.oneself D.for itself think by itself 还是think itself 还是用of 或者for The door opened ______ (by itself / of itself). 究竟哪个正确?of itself 自动的,by itself 独自、单独；for itself 亲自,为自己以上为找到的参考资料,网络上存在两种答案,究竟是哪个呢?请专家详解,谢谢! the objectives of innovation by and in itself翻译 The house( )is beautiful,but the surroundings are rather unpleasant.A,by itself b,itself c,for itself d,of itself,为什么? 8.The door can open .8.The door can open .A.by itself B.with itself C.of itself D.in itself为什么不是A？ 英语代词语法问题Dictatorship is the one of many evils which tends/tend to perpetuate itself / themselves.请问,是选tends/itself还是选tend/themselves.为什么? the door opened by itself the door was open by itself哪一个对意思是门自己开了 The Congress of People's Deputies in effect voted itself out of existence.到底是说是用投票表决还是说投票表决是不起作用啊. 3 times a number is greater than the double of itself by 5. the piece of meat is on the plate by itself翻译成中文 what number exceeds 50 percent of itself by 10 什么数字超过50%的本身10 science questions2describe the process by which yeast produces copies of itself? 如何判断化学式是酸还是碱 如何判断269是质数还是合数 如何判断是催化还是裂化 如何判断物质是弱酸还是强酸? 如何判断酸是强酸还是弱酸?