将下列句子改为含宾语从句的复合句
1,Where can I buy a bick?Can you tell me? 2,When does the party begin?i wonder. 3,How does he learn English?Do you know? 4,What are the girls doing there?Plrase tell me 5,Which car belongs to Bob?I don’t know 请问含宾语从句的复合句都是什么,要讲解讲明谢谢