, нужно объяснить использование глаголов, выделенных жирным шрифтом

Объяснение:

I love - (present simple) - we use present simple with stative verbs;

I am studying ( present continuous) - Things which are happening at the moment of speaking;

I'm sitting - (present continuous) - Definite future plans;

My lessons start ( present simple) - events which are part of a timetable;

I go ( present simple) - a regular action in present time period;

I am working (present continuous) - future plans;

I am meeting (present continuous) - future arrangements;