Question

()you often ()to your classmates' birthday party?

Answer 1

你是被邀请,你翻译成陈述句来理解

应该是you are often invited to 如果你选B,还原过来就是you often invite to 显然是不对的,你是被邀请,而不是邀请

像这样一类问题,一般都先转换成陈述句,然后再把陈述句改为一般疑问句,就不容易出错了~