Школное упражнение пж помогите! По Британскому!Fill in the correct reflexive pronoun

Школное упражнение пж помогите! По Британскому!
Fill in the correct reflexive pronoun where necessary

1.Brian often worries______too much without reason.

2.I've made some biscuits John, help______.

3.Brenda has taught_______how to paint.

4.Give me two minutes to change_______and we'll leave.

5.Mary can't dress_______yet; she's only three.

6.We really enjoyed_______at the amusement park.

7.Professor Adams walked into the room and introduced________.
Плееееез помогите