diff --git a/Readme.md b/Readme.md
index 9e97f37..b57ae36 100644
--- a/Readme.md
+++ b/Readme.md
@@ -18,7 +18,7 @@ This book was designed for easily diving into Rust，and it's very easy to use:
 - Both [English](https://practice.rs) and [Chinsese](https://zh.practice.rs) are supported
 
 
-> Part of our examples and exercises are borrowed from [Rust By Example](https://github.com/rust-lang/rust-by-example), thanks for the great works you have been doing!
+> Part of our examples and exercises are borrowed from [Rust By Example](https://github.com/rust-lang/rust-by-example), thanks for the great works you have been done!
 
 ## Some of our exercises
 
diff --git a/src/variables.md b/src/variables.md
index cb30080..c977e43 100644
--- a/src/variables.md
+++ b/src/variables.md
@@ -28,7 +28,7 @@ fn main() {
 A scope is the range within the program for which the item is valid.
 
 3. 🌟 
-```rust,editable.
+```rust,editable
 
 // fix the error below with least modifying
 fn main() {
@@ -146,4 +146,4 @@ fn main() {
 ```
 
 
-> You can find the solutions [here](https://github.com/sunface/rust-by-practice)(under the solutions path), but only use it when you need it
\ No newline at end of file
+> You can find the solutions [here](https://github.com/sunface/rust-by-practice)(under the solutions path), but only use it when you need it