Opposite my school _______ a book store, _______ was built ten years ago.

British adventurer and swimmer Lewis Gordon Pugh became the first person to swim in the icy waters of North Pole，to raise awareness of how global warming ______ the polar ice cap.

My mother doesn’t approve_______ abroad to study before graduation from high school.

At the time of the earthquake Jeff was still in his office. He ________ to finish a project before he left for the day. 

Johnson can now operate the machine much better than he_______.