Answer:
1)Ann likes to play chess and guitar.
2)My mother can bake brownies and pizza.
3)I am good at maths but I am not good in writing long sentences.
4)You can pick red dress and you can pick blue dress.
5)I am not going to do my homework for I did not understand the question.
6) you can borrow my umbrella but i need it too.
7) I am going to my friend’s place but/so i have to finish my errands first.
Explanation:
a simple sentence can be converted into a compound sentence by expanding a word or phrase into a clause and by using a <em>coordinating conjunction</em> to connect the clauses.
<em>coordinating conjunction: </em>
for, and, nor, but, or, yet & so.