________, she stood and stared while the police arrested her husband.

When they had finished playing, the children were made to _______ all the toys they had taken out.

So far，I haven’t adapted to the fast ________of the life in Toronto.

(2013·潍坊三县一模)If you don't work hard，it will be of no ________ for others to help you.

Science and technology have __________ in important ways to the improvement of agricutural production.