The number of people in the world ________ about 6 billion and large quantities of waste ________ each year. [ ]

下列有关文学常识不正确的一项是（ ）

下列各句中，没有语病的一句是（ ）

If you want to advance yourself in your studies, you will first have to ________ yourself of those shortcomings that can become barriers to progress.

It was a pity that he __________ blind, but to the joy of his family, his dream of becoming a musician __________ true at last