Je prétexterai une affaire quelconque,
I shall feign some kind of business.

9. Quelque, in the sense of some, is variable:

Il a quelque mérite,
Je lui ai donné quelques pièces d'argent,
He has some merit.
I have given him some pieces of money.

10. Quelque, in the sense of about, is invariable:

J'ai perdu quelque trois cents dollars,
I have lost about three hundred dollars.
11. Tel homme, such man.
Telle femme, such woman.
Tels travaux, such works.
Telles fleurs, such flowers.

12. Tout, meaning every, varies only for the feminine:

Tout homme doit faire son devoir,
Toute ville a ses magistrats,
Every man ought to do his duty.
Every city has its officers.

13. Tout, meaning all, varies in gender and number:

Tout le monde, all mankind--everybody.
Toute la terre, all the earth.
Tous mes enfants, all my children.
Toutes ses lettres, all his letters.