В 3 и 1 не нужно.
Вот и ещё я должна,что то тут писать потому,что слишком коротко получилось:)
Tim has got a cat. His cat is black. It is not big. It is small. His cat can skip. I like his slim cat.
<span><em>John is the best pupil in our school.</em>
<em>The weather is better today than on Sunday.</em>
<em>I like ice cream more than cakes.</em>
<em>Autumn is the worst season for me.</em>
<em>There are many posters on the wall</em></span><span><em>.</em></span>