Sometimes it’s not clear whether you need to use present simple or present continuous. This is an exercise about the difference between these tenses.
The present continuous is a tense to talk about actions that are going on in the present. This exercise is about forming this tense.
The present continuous is tense to talk about things in the present that are going on. This is an exercise about forming questions in the present continuous.
The present continuous is tense to talk about things in the present that are going on. This is an exercise about the negative form of the present continuous.
The present continuous is tense to talk about things in the present that are going on. This is an exercise about forming the present continuous.
When someone refers to the present tenses, he is talking about the present simple, present continuous, the present perfect and the present perfect continuous.