bonsoir svp svp svp svp aidez moi pour demain ex 6.7.8.9 et 5 non et merci infiniment

n°=6:
1.B
2.C
3.B
4.B
5.B
6.C

n°=7:
1.used to go skiing
2.many trees
3.while we were
4.the storm
5.flooding is getting worse

n°=8:
1.volcano erupted
2.were walking to school
3.was more powerful
4.used to always hide
5.are common

n°=9:
1.were you...went off
2.spread
3.happen
4.don't....had