Next week new glass will be installed in the windows to stop heat escaping. (installing -> installed)

At this time next month, we will have a free solar shower. (having -> have)

My teacher, Mr. Buong used to cycle to work. (uses -> used)

If we plant more trees, there will be less air pollution. (more -> less)

The University of Cambridge is considered to be one of the most prestigious universities. (considered -> is considered)