The present perfect continuous is a tense you use when there is a clear link between the past and the present and when the focus is on the duration.
The present simple is a basic tense in English to talk about the present. This is an exercise on how to form questions in the present simple.
The present simple is a basic tense in English to talk about the present. This is an exercise on how to form the negative form of this tense.
The present simple is a basic tense in English to talk about the present. This is an exercise on how to form this tense.
De present perfect or present perfect simple is an English tense that you use when there is a clear connection between the past and the present.
The present continuous (or present progressive) is a tense you use to talk about actions in the present that are going on or when you want to focus on duration.
The present simple (or simple present) is a tense in English that you use when you want to talk about short simple actions and habits in the present.
