怎样改写过去将来时改的疑问句?请先解决以下问题.

1.that they would have a test on English 提问：What did he say?
2.tomorrow提问：He asked when they would have a test on English?为什么第二句是He asked提前，而不是when提前。如果行的话，再帮我搞定一句：Mother believed that Tom would pass the test.对believed that Tom would pass the test 提问因为tomrrow提问是从句里的成分而不是主句里的。把said换成asked是因为根据提问后的需要。这个提问也是就整个宾语从句提问同样是：What did mother believed?