if引导的宾语从句和宾语从句5句

怎么两个都是宾语从句?我猜有一个是状语从句。If引导的条件状语丛句：1、 If it rains tomorrow,we’ll stay at home。2、 If you use your head,you’ll find a way。3、 If you don’t hurry up,you’ll miss the train。4、 I won’t go jf I don’t hear from him。5、 We’ll go skating if I am free tomorrow。If引导的宾语从句：1、I wonder if he studies hard。。2、He asked us if everybody was here。3、I asked if they would win。4、We don’t know if our teachers will attend the class meeting。5。Please tell me if you know the answers。