Put the verbs in brackets into the present simple or the present continuons

1. We are going shopping. Do you want to come
 I can`t, I amhelping Mom
2. Why are you taking umbrella
It is raining outside.
3.What do you wear at school
I usually wear a school uniform, but today I am wearing my ...
4. What are they talking about
I don`t know. I think, they are trying to ...