根据句意和汉语注释，在答卷标有题号的横线上，写出单词的正确形式。
Computers are one of the greatest _____________ (创意) of the 20^th century.
The two girls looked _____________ (类似的), though they aren’t sisters or cousins.
“Do you need more milk?” “No, thanks. There is _____________ (充足) in the fridge.”
The light was red but the ambulance (救护车) drove straight _____________ (穿过).