1 . It has four Roll-Royce Merlin engines, but the group will need to have only three of them rebuilt. ____________ when they broke open the packing cases and found that the fourth engine was sweet as honey-still in perfect condition.（根据句意填空）

2 . 让他高兴的是，他找到了一个有家具的公寓。
________________________, he found a ___________ apartment.

3 . To his d_______, his son was admitted to Fudan University. (根据首字母填空)