Feedback on exercise D:
In the first phrase the verb was wrong. You don’t want to use make in this expression, but instead you should use give --> 'so to give you a picture'.
In the second phrase the verb was again wrong. You don’t hear people saying ‘I’ll offer you credit...’, but instead you’d hear them say ‘I’ll give you credit’ when they want to compliment the other person’s work.
In the third expression the preposition was all wrong. Finnish native speakers might sometimes say we ‘discuss about something’, but discuss is never followed by a preposition. When you use the verb talk it’s a different story altogether: you talk about something or someone.
In the fourth and last example the preposition was again wrong. With interested you don’t use the preposition at but in. Did you find any other prepositions? About is one that you could find. Did you notice any differences in how interested in and interested about are used?