so 〜 that と too 〜 to ...

□解説

□問題

□基本問題

The envelope is (　 ) dangerous for us to open.　　[城北高]
(1)so　(2)enough　(3)very　(4)too

□標準問題

We could not play baseball yesterday (　 ) it was raining.　　[神奈川県]
(1)or　 (2)if　 (3)because　 (4)but

□発展問題（会員専用）

He wanted to buy the camera, but he didn't have enough money for it.
= This camera was (　 ) expensive for him (　 ) (　 ).　　[早実高等部]