If you live in the country or have ever visited there, ______ are that you have heard birds singing to welcome the new day.
__________ 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.