1.She wants to know which car you like best?2.Can you tell me when your birthday is?3.We want to know who you look like?4.I want to know why you must leave?5.I don't know where the bank is?从句都改用...句子后面要加句号还是问号？这个要看主句是表疑问还是表陈述。Sorry，有几句后面的符号不对。 1. She wants to know which car you like best.2. Can you tell me when your birthday is?3. We want to know who you look like.4. I want to know why you must leave.5. I don't know where the bank is.