根据句子意思及汉语提示，写出所缺的单词。

1. Mary passed her examination because she studied very ________ (努力).

2. He told me his name but I've ________ (忘)it.

3. In the eighteenth century, more people came to America, ____ (主要地,大部分地) Europeans.

4. Jim has lived in Australia for two years. He is used to __________ (驾驶)on the left.

5. I could see her __________ (透过)the window.