单词拼写。根据句意及所给单词首字母或汉语提示填空。

1. How many _________(科目)do you have at school?

2. My sister _____(上) maths every  day.

3. W_____ is the fourth day of the week.

4. I like English ,b_____it is intresting.

5. Our s___teacher is very strict in his work.

高压验电时要主意什么。