根据句意及汉语提示写单词。

1. Mr Wang was walking ________ (往) the bus stop when I met him yesterday.

2.When I asked my mother if I could go swimming with my classmates, she________ (点头).

3. A ________ (香烟) thrown into the woods in dry weather may start a fire.

4. ________ (尽管) he is young, he has a good knowledge of science.

5. Hearing the good news, ________ (眼泪) of joy ran from the mother’s eyes.