diff --git a/1-js/09-classes/01-class-patterns/article.md b/1-js/09-classes/01-class-patterns/article.md
index 837941cb..ca120f71 100644
--- a/1-js/09-classes/01-class-patterns/article.md
+++ b/1-js/09-classes/01-class-patterns/article.md
@@ -7,7 +7,7 @@ In object-oriented programming, a *class* is an extensible program-code-template
 
 There's a special syntax construct and a keyword `class` in JavaScript. But before studying it, we should consider that the term "class" comes from the theory of object-oriented programming. The definition is cited above, and it's language-independent.
 
-In JavaScript there are several well-known programming patterns to make classes even without using the `class` keyword. People talk about "classes" meaning no only those defined with `class`, but also with these patterns.
+In JavaScript there are several well-known programming patterns to make classes even without using the `class` keyword. People talk about "classes" meaning not only those defined with `class`, but also with these patterns.
 
 The `class` construct will be described in the next chapter, but in JavaScript it's a "syntax sugar" and an extension of the prototypal class pattern described here.
 
diff --git a/1-js/13-modules/03-modules-dynamic-imports/article.md b/1-js/13-modules/03-modules-dynamic-imports/article.md
index 513cdf89..d8de2bcf 100644
--- a/1-js/13-modules/03-modules-dynamic-imports/article.md
+++ b/1-js/13-modules/03-modules-dynamic-imports/article.md
@@ -3,7 +3,7 @@
 
 Export and import statements that we covered in previous chaters are called "static".
 
-What's because they are indeed static. The syntax is very strict.
+That's because they are indeed static. The syntax is very strict.
 
 First, we can't dynamicaly generate any parameters of `import`.
 
diff --git a/2-ui/1-document/04-searching-elements-dom/article.md b/2-ui/1-document/04-searching-elements-dom/article.md
index 3a7a9aee..4ddc8db0 100644
--- a/2-ui/1-document/04-searching-elements-dom/article.md
+++ b/2-ui/1-document/04-searching-elements-dom/article.md
@@ -266,8 +266,8 @@ All methods `"getElementsBy*"` return a *live* collection. Such collections alwa
 
 In the example below, there are two scripts.
 
-1. The first one creates a reference to the collection of `<div>`. As of now, it's length is `1`.
-2. The second scripts runs after the browser meets one more `<div>`, so it's length is `2`.
+1. The first one creates a reference to the collection of `<div>`. As of now, its length is `1`.
+2. The second scripts runs after the browser meets one more `<div>`, so its length is `2`.
 
 ```html run
 <div>First div</div>