请问选 什么?I hear that they haven't decided _____.A:whether they

请问选 什么?I hear that they haven't decided _____.A:whether they they haven't decided on whether they should go to beijing 为什 they haven't decided yet .theyare ()yesterday I haven’t decided which _____(choose) They haven't decided where they should build a new train sta they haven't decided on it that go to beijing?这样对吗 They haven't decided on the place for skiing.=They haven't d they haven't decided where to go next?为什么不是they haven't deci they have to study a lot,_____?A.don't you B.haven't they They haven't decided which hotel＿＿.A.to stay B.to stay at C. They haven't decided where to go.是什么从句? They haven't decided yet which hotel to stay at.