根据句意及所给汉语提示，写出正确的单词。

1. I'm sorry. I have too much _________ (作业) to do this weekend.

2. Maria won first prize in yesterday's singing _________ (竞赛).

3. I need two _________ (薄片) of bread first.

4. For me, a good _________ (朋友) likes to do the same things as me.

5. He has to finish the _________ (地理) project in the evening.