根据句意及汉语提示完成下列句子。
1. There are ________ (太多) things in her room.
2. Don't talk ________ (大声地) in the reading room.
3. He often helps her mother ________ (洗) clothes on Sundays.
4. ________ (后来) she knew the name of the singer.
5. Can you come here ________ (到……之前) five o'clock this afternoon?