11.Nowadays electrical energy_________from the sun has become the most widely used energy.
Some customers accuse Toyota ______ being slow to fix the car problems, which makes them disappointed.
Many useful suggestions were ______ at the meeting to ensure people can live a low carbon life.
—Was it in Shanghai, where the World Expo 2010 was held ______ you met Helen?—Yes. We hadn’t seen each other for about 5 years.
—Don’t stay in studying all day. _______.—It sounds quite reasonable. What about play basketball?
This kind of IPod _______ well in China and it is popular with students.