Was it because Jack came late for school ______ Mr. Smith got angry?

A company ______profits from home markets are declining may seek opportunities abroad.

It was the middle of the night __ my father woke me up and told me to watch the football game.

Among the many dangers_________-- sailors have to face, probably the greatest of all is fog.

David dislikes television heroes who smoke, __________?

It is only with the help of scientific research _____ bring PM1 air pollution under control.

When travelling in America, we stayed in a quiet hotel, __________.

A Chinese immigrant ______ neighbours said struggled to survive in America was arrestedSunday because he used a butcher knife to kill his relatives.

— Did you know any French before you arrived in Washington?
— Never ______ it, actually.

This hotel is the highest building in the city, from ______ top you can enjoy a good view of our city.