Помогите пожаоуйста!!!!!!! Очень надо!!!!!!!
Докажите тождество:
а) (c-8)(c+3)= c в квадрате-5c-24
б) m в квадрате +3m-28=(m-4)(m+7)

1.In 2010 a terrible earthquake in Haiti ...........(leave) thousands of people homeless.

2.Susan.....................(break) her arm and can not play tennis.

3.We`ll need to leave a bit later because i .....................................(not/finish) packing yet.

4.The thieves ..........................(escape) with the stolen painting long before the police arrived.

5.We ............................................(have) a lot of fun sitting around the campfire songs last night.

6.It was the first time Chris  .............................(ever/trek) in the mountains.