1.   As the star shrank, the gravitational field at the surface would become stronger and the escape velocity would increase.

2.   As women increasingly went out to work, the possibility of a conflict of loyalties became stronger.

3.   In the evening the wind became stronger and soon a great storm broke above us.

4.   As the dispute continues, tension is mounting on the border between the two countries.?

5.   Use higher platforms as your legs become stronger.

6.   Her confidence grew, and soon she was able to go out driving on her own.?

7.   With increasing concern for the environment, the need to recycle urban land becomes even stronger.