fix: grammar mistakes

06-variables/01-basic-data-types/exercises/README.md

@@ -4,4 +4,4 @@
 
 2. **[Print hexes](https://github.com/inancgumus/learngo/tree/master/06-variables/01-basic-data-types/exercises/02-print-hexes)** (optional exercise)
 
-    Print numbers in hexadecimals
+    Print numbers in hexadecimal

06-variables/02-declarations/01-declaration-syntax/02-naming-rules/main.go

@@ -17,7 +17,7 @@ func main() {
 	// underscore is allowed but not recommended
 	var _speed int
 
-	// unicode letters are allowed
+	// Unicode letters are allowed
 	var 速度 int
 
 	// keep the compiler happy

06-variables/03-short-declaration/02-package-scope/main.go

@@ -19,7 +19,7 @@ import "fmt"
 // safe := true
 
 // However, you can use the normal declaration at the
-// package scope. Since, it has a keyword: `var`
+// package scope. Since it has a keyword: `var`
 var safe = true
 
 func main() {

06-variables/03-short-declaration/questions/README.md

@@ -49,7 +49,7 @@ b := true
 ```
 
 * bool *CORRECT*
-* string 
+* string
 * int
 * float64
 
@@ -59,7 +59,7 @@ i := 42
 ```
 
 * bool
-* string 
+* string
 * int *CORRECT*
 * float64
 
@@ -69,7 +69,7 @@ f := 6.28
 ```
 
 * bool
-* string 
+* string
 * int
 * float64 *CORRECT*
 
@@ -94,7 +94,7 @@ x, z := 10, "hi"
 * 20
 * false
 
-## Which following declaration can be used in the package scope?
+## Which of the following declaration can be used in the package scope?
 
 * x := 10
 * y, x := 10, 5

06-variables/04-assignment/exercises/README.md

@@ -1,6 +1,6 @@
 # Assignments
 
-Assignment means "copying" values. Everything is get copied in Go. You'll learn more about this afterwards.
+Assignment means "copying" values. Everything is getting copied in Go. You'll learn more about this afterward.
 
 Now, get your feet wet and try some assignment exercises.