Ответ:
1.
a) falseness
b) caring
c) communicative
d) slothful
2.
Happy - Joyful
Diligent - Hard-working
Diary - Day book
Honesty - Fairness
3.
A friend will always stand with you. - You will never be betrayed by your friend.
Life without friendship is like the sky without the sun. - Friendship is quite essential in one's life.
An old friend is the best mirror. - An old friend shares a lot of qualities and traits of one's.
A friend is someone who can sing you the song of your heart when you've forgotten it. - You will always be cheered up by your friend when you need it.
4.
Life without friendship is like a cat without a paw.
A friend is someone who is always willing to cheer you up when needed.