Having lived in China for 8 years, Helen has a good ______ of both English and Chinese.
Washington Square Park, ________ the first president, is one of New York city's most popular and oldest parks, dating back to 1827.
Most Americans would prefer to keep their problems ________ themselves, and solve their problems ________ themselves.
—As a weightlifting athlete, Thomas is indeed too large, I think. —But ________ that, he is still one of the best athletes at present.
I'm working this evening because I am ________ schedule with my work.
Highspeed trains which travel through my hometown ________ up to 250 km per hour make it a small world.