I don’t know if she to the movie. If she ,I’ll tell you.

He tried his best to solve the problem,________ difficult it was.

Why does Alice look so tired?— It took her a whole morning to ____________ a new dress at the store.

His father enjoys __________ a newspaper after dinner.

However，at　times　this　balance　in　nature　is＿＿，resulting　in　anumber　of　possibly　unforeseen　effects．