Helen has _______ beef of us all.

In my opinion, everyone has periods in their lives _______ everything seems very hard.

Nowadays, a large number of women, especially those from the countryside, ____ in the clothes industry.

_______ the final of UEFA Champions League (欧冠) between Manchester United and FC Barcelona, I would not have stayed up after midnight.

Do you think if Tom the work well—I think he will if he his best.