7. The university has launched a research center to develop new ways of ________ bacteria which have become resistant to drug treatments.
Kids don’t learn their native language , but they become fluent in them within a few years.
such heavy pollution already, it may now be too late to clean up the river.
——Are you with your present job? ——Not at all. I have long desired I in your company.
The news quickly around the town.
——I will come John is invited, too. ——You mean if John comes you will come.