fix

ex/theme-12-classroom-phrases/practice-01.md

@@ -4,7 +4,7 @@ Source style: survival English and mini-class dialogues.
 
 ### Exercise 1. Match the phrase and the meaning
 
-Example: 1 -> b
+Example: Excuse me. -> Sorry, I want to ask something.
 
 1. Excuse me.
 2. I don’t understand.
@@ -20,7 +20,7 @@ e. I do not understand.
 
 ### Exercise 2. Choose the correct phrase
 
-Example: Look at the task and write the answer.
+Example: You want to ask politely. Excuse me. / Goodbye. -> Excuse me.
 
 1. You want to ask politely.  
    Excuse me. / Goodbye.
@@ -36,7 +36,7 @@ Example: Look at the task and write the answer.
 
 ### Exercise 3. Complete the phrase
 
-Example: Look at the task and write the answer.
+Example: Excuse __________. -> me
 
 1. Excuse __________.
 2. I don’t __________.