After years’ study with the help of Professor Henry Higgins, Eliza was able to________various levels of English usages, such as standard and substandard.
__________ you are grown up, you must stop this childish behavior, or you'll make a fool of yourself.
I paid a visit to Beijing last week and I __________ many photographs of the Palace Museum.
The travel expenses __________$ 1,000.
—What should I do with this passage? —__________ the main idea of each paragraph.
We __________ him __________ his winning the first prize.