Use the quiz to train : http://quiz.thebigchallenge.com/  

http://www.ef.fr/blog/language/8-expressions-parler-anglais-brit/?source=007932%2CFBFR_M_PG_BL_8Expressions

WB p. 53 Slavery        https://newint.org/features/2001/08/05/facts/ Child Labour a)  https://www.antislavery.org/slavery-today/child-slavery/ b) Number of working children between 5 and 14 in the world https://www.unicef.org/search/search.php?q_en=child+labour&go.x=0&go.y=0 One of the symbols against child labour: Francis BOK https://en.wikipedia.org/wiki/Francis_Bok

When did this event take place ?

http://www.memovoc.com/outilstensepresentsimple.htm