work on;reach out;be about to;at one's leisure;catch one's eye;put into operation;overcome the challenges;among the top concerns;protect...from...;bring...to life
(1)
We ought to to help those who are affected by the epidemic.
(2)
How to keep the drinking water clean after the flood is .
(3)
She has the experiment for nearly a week,without leaving the lab.
(4)
It is important that our drinking water should being polluted.
(5)
We have to to get the best result.
(6)
A trial run is needed before the machine is .
(7)
The advertisement in the newspaper and I wanted to go for an interview.
(8)
The man in black set fire to the house when the police came.
(9)
The drowning boy was by a woman with a series of first aid.
(10)
These old men and women usually go to the square to dance .