rry, but there’s no smoking roomin this section on the train　—Oh, I _____ that, and I won’t smoke again

g as a manager, Rebecca found it hard ______ between work and her family.

Students should be __________ in class.Only listening without taking part in the activities is not good for one’s study.[ ]

Some people always take seriously the _______ of the complete globe end in the near future.

Reading without stop is a ______ piece of work.