should(n't) have + past participle

English as a second language 
Simple past tense

• Main content: Past simple
• Other contents: Regular and Irregular Verbs

This guide will help you understand and practice the grammar structure “used to.” First, review the examples and rules carefully. After that, develop each exercise following the instructions. Remember that “used to” is used to describe habits, routines, or states in the past that have changed. Answer clearly and use complete sentences.

Write the correct answer.

English as a Second Language 
 

• Main content: Present Simple
• Other contents: Subject verb agreement

English as a second language 
Present simple vs continuous grammar exercises

• Main content: Present simple and present continuous