Please tell answers for all 4

1. To make a comparison.

4. To suggest how one event relates to another.

Explanation:

On the contrary, compares two different things as different or opposite.

Example:

This flower smells amazing. On the contrary, this other one doesn't.

As a result, suggest the result or output of something, therefore, suggesting how it relates.

Example:

I was walking down the street when I tipped on a rock. As a result, I was injured.

"On the contrary is used to make a comparison. On the contrary, as a result, is used to suggest how one event relates to the other. As a result, you will get this question right"

On the contrary - To suggest how one event relates another

After dinner - To indicate a shift in time

Back at the hotel - To show a change in location

As a result - To make a comparison

(The last one i'm not so confident about it being right so sorry if it's wrong)

i'm going to go whit a

i wouldn't know because i've never read it, but going over it it looks interesting