which thinghas four legs but it can't walk.what is it?

which thinghas four legs but it can't walk.what is it? Which four letters can make everyday old? Which four letters can frighten a thief? Which four letters can frighten a thief? Which is the largest number of four? Which four letters are thieves afraid of? Which four letters can make everybody old?猜谜语 英语智力测试Which four letters can make erevyone old? Which four letters can make everyday old key:_____ Which four letters can make you wet?猜猜看 which has four legs and only one foot? which is the _____flower of the four?(beautiful) four four four FOUR. 英语 i have ten books,four of which are written in英语 i have ten books,four of which are written inEnglish.这里为什么用which? Maria is in Grade Four.对划线部分提问 划线部分：Grade Four是用Which还是What?