(what)i want to know is (whether) it is worth doing 括号里的为什么这

(what)i want to know is (whether) it is worth doing 括号里的为什么这 （what）i want to know is （whether）it is worth doing为什么这样填啊? question is whether it is worth doing. ____I want to know is ____it is worth doing. what is simon doing?I want to know.合并I wonder what is simon The question is whether it is worth doing. 英语选择和填空The questions is A whether is it worth doing B that i I want to know whether it is polite to eat food with my fing whatever is worth doing at all is worth doing it well.为什么这里的 i want to know what love is It is ( )to know what she will be like.括号里天excite的适当形式 I Want To Know What Love Is的原唱是谁