Putting in a new window will ______ cuttingaway part of the roof.

Mr. Zhang, our math teacher, is strict with students and serious in teaching work, so he ____.

There is no doubt at all ________she will call us whenshe gets there.

We really shouldn’t use plastic bags any more when shopping.——_____ It’s important to protect our environment.

Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city