Going out for tea with friendsincreasingly popular during the past twenty years

We still have some minutes left before the end of the exam. There _____answering chances for us. [ ]

Such good use had been his spare time_________ his English has improved a lot． [ ]

I want to buy a comic book but there were__________ left at the bookshop.

A sense of __________ is the basic requirement for people working in the service industry, such as education and health care.