The travelers are going to Taiwan, （ ） they plan to stay for two or three days.

The chemical factory was pulled down _____protecting the environment.

I gave John a present but he gave me nothing______.

We moved to London _____ we could visit our friends more often.

He learned how to use sign language to _____ with deaf customers.

The authority urged the rebellious party to _____ their arms and come back to the negotiating table.

My university lies in the north of the city, around （ ） high mountains.

_____, the professor is still trying to learn a new language.

Harmonious marriage, however, does not necessarily （ ） much sharing of interests and responsibilities.

（ ） that the trade between the two countries reached its highest point.

They were talking （ ） while preparing dinner.

He studies so hard to avoid （ ） at the bottom of the class.