除了这本书後面有问题答案以外，这两本书完全一样。
The two books are the same except (for the fact) that this one has an answer key at the back.
所有问题都要从属于这一问题。
All the other issues are subordinate to this one.
医生定期到这家进行拜访，检查婴儿有没有问题。
The doctor made periodic visit to the house to see if the baby was all right.
