Don’t hesitate ______me if you have any questions.
The PLA soldiers came to the ruins of Yushu and after ______ seemed to be a long time, they helped some victims out.
Everyone has a responsibility to save _____ water, if future generations are to enjoy a similar standard of living to _____ we enjoy now.
---________, but the noise is really disturbing. I can’t sleep. --- I’m sorry. I didn’t know you would mind.
_______ progress it is, you can’t stop moving forward.
All the employees except the manager _______ to work online at home.