Answer:
I have locked the door now
Mary is opening the window
Fred and Ben are eating sandwich
You are laughing at me
Mr Smith is wearing a blue shirt
Ben have payed $20 for the lunch
Answer:
Has been traveling
Haven't heard
Hasn't sent
Have (you) heard
Has been putting
Have never tried
Have (you) been doing
Have been trying
Have (you) finished
Have (you) asked
Explanation:
The present perfect tense is the tense we use to talk about events that happened in the past but have present consequences. There are two types of this tense:
- The present perfect simple - used to talk about completed actions that have an influence on the present. The emphasis is on the result of the action.
- The present perfect continuous - used to talk about activities that started in the past and may continue in the present. The emphasis is on the activity itself.
You can see some more information about these tenses in the images I've attached below.
Interaction refers to A. mutual participation between people or things.
<h3>What is interaction?</h3>
This is known as a kind of action that occurs as two or more objects have an effect on one another. This is reciprocal action or influence.
Hence, we can from the definition, it is seen that interaction is mutual participation between two people or things, it is an action occurring between two things.
Read more about<em> mutual participation</em> here:
brainly.com/question/16101197
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"mankind was my business"