The Southern States wanted to ______ the Union, so the American Civil War ______. [ ]

I ________ to help you with your homework, but I couldn’t spare any timeI ________ a composition last night and I’ll finish it today

She_______ballet before she entered film industry.

Some insects________the colour of their surroundings to protect themselves.

Jack’s mother was twenty-seven when he wasborn. Jack is eleven this year. How old is his mother?