--- I saw your uncle take a taxi to the airport. Why didn’t you drive him there ? --- I ___. But my car ____.
By 2013, cases of AIDS had been reported in Harbin, thus _____ AIDS a provincial concern.
I was blessed with a happy childhood, ______ that most people would want to have.
The Arctic, which is abundant in oil, _____ second only to the Middle East, is ______ home to seals.
There are roughly 1, 000 students in Grade Two, most of _____ are girls.
Rubbish in space has caused collisions, which would ______ produce more rubbish that threatens astronauts and satellites.