Language changes

Author: kochaika

Diff for: Data structures/Dictionary keys/task.md

@@ -3,5 +3,5 @@
 Try to figure out what's wrong with this dictionary and fix it.
 
 When fixing, be aware of the following requirements
-- Since the dictionary keys can be only immutable types, replace the list with several individual `key:value` pairs with keys of type `str` or with a tuple.
-- Since the keys need to be unique, rename one of the 'Bob' keys to any name you want.
+- Since dictionary keys can only be of immutable types, replace the list with several individual `key:value` pairs with keys of type `str` or with a tuple.
+- Since keys need to be unique, rename one of the `Bob` keys to a name of your choice.

Diff for: Data structures/List items/task.md

@@ -9,7 +9,7 @@ animals[:] = []
 
 ### Task
 Make all `animals` elephants by replacing the last two items.  
-We suggest that you first run the program in the IDE without changes to see how the `animals` list looks like after all the operations have been made
+We suggest that you first run the program in the IDE without making any changes. This will allow you to see what the `animals` list looks like after all the operations have been performed.
 
 <div class='hint'>Use assignment to a slice as in examples.</div>