Adverbs of Frequency: never, hardly ever, sometimes, often, etc.

Ex. 1  https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm
Ex. 2  https://elt.oup.com/student/solutions/elementary/grammar/grammar_02_012e?cc=global&selLanguage=en
Ex. 3 https://www.english-4u.de/en/grammar-exercises/word-order5.htm

First Conditional

EXERCISES on FIRST CONDITIONAL:

Exercise 1 https://www.englisch-hilfen.de/en/exercises/if_clauses/type_1_statements.htm
Exercise 2 https://www.englisch-hilfen.de/en/exercises/if_clauses/type_1_negation.htm
Exercise 3 https://www.perfect-english-grammar.com/first-conditional-exercise-1.html

REVISE ZERO CONDITIONAL:
https://www.perfect-english-grammar.com/zero-conditional-exercise-1.html

Zero Conditional

Do exercises to practise this grammar:

ex.1 https://www.perfect-english-grammar.com/zero-conditional-exercise-1.html

ex.2 https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-112834.php

ex.3https://www.grammarbank.com/zero-conditional-exercise.html

How to write a Christmas Greeting Card?

http://www.slideshare.net/ivlijana/for-christmas-greeting-cards