"There is a custom by which the young should respect the old."中为什么用"by which"?

There is a custom by which the young should respect the old.中为什么用by which? There is a silly B Is there anything bad with these doc to pass custom?(翻译) There is _____time left,is there?A little B alittle In China it is a custom to give kids lucky money,( )during the Spring Festival.A.finally B.luckily C.unfortunately D.especially What flowers____in the garden?A:is there B:are there C:there is D:there are “___a river near here?” A.Are there B.There is C.There are D.Is there ------a lot of chairs.A there is B there are it's the custom that each boy and girl ___given a gift on christmas dayA.is B.are C.were D.was选什么? Once is no custom是什么意思 _____a library in your classroom.A there is B there is't C Is there There is nothing in the bottle,A.is not there B.is there选哪个、? 英语翻译1.While questions on specific issues can be expected to arise from time to time,if there is a single overriding message in this document,it is that *** expects everyone to respect the confidential information of *** Corporation,our custom There is a b-------- park near here there is ___left A.nothing B.none 翻译A is up there with B 请问The activator is a custom design which is made specially for this purpose. up there with a is up there with b