A is to B what Cis to D(A与B的关系犹如C与D的关系)中的what 是关系代词但它引导的是什么从句?

A is to B what Cis to D(A与B的关系犹如C与D的关系)中的what 是关系代词但它引导的是什么从句? That's unfair for him,_____?A is it B isn't it Cis that D isn't that There()a football match next Tuesday Ais going to have B is going to Cis going to be要原因 What do you think —your friend so special?A makes B to make cis making Dmaking there is a little apple tree in front of your house ,____?A is it B isn't it Cis there Disn't there There's little milk in the bottle,________问横线上填什么.有几个选择：A.is it B.isn't it Cis there Disn't there don't worry,I think what we need to do______（选择题）Ais doing Bwas doing Cis done Dhas done I LIke my bike,it [ ]very well A rides B is riding Cis ridden Dhas ridden Tom,together with the twin,( )to school every day A,go B,goes Cis going “A is to B what C is to -I can't walk any longer,David?-Why?____ A.What happened?B.What did you happen?C.What have you happen?D.What is happened to you? ——that pair of_a little cheaer?A IS GLASS B ARE GLASS CIS GLASSES DARE GLASSES Sixteen-year-olds___to drive .A is allowed B are not allowed .Cis not allowed.选哪个? 为什么? t is ___he is addicted to computer games___worries his parents that much .A WHAT THAT B that what C that that D__ that 选么 为么? didn't know what ___ to her last night.A.was happened B.happen C.happened D.is happened Jim doesn't understand__ A.what is the way to the museum B.why his wife always goes shopping ______you are supposed to do_______you don't like a thing is to change it.don't complain..选项：A.that; what B.when; that C.what;since D.what;when 英语翻译a+b is to a what a is to b