What were you and your cousin doing at this time yesterday—He was reading a magazine ________ I was writing an e-mail.

He was told that it would be at least three more months _____ he could recover and return to work.

What’s the low-carbon life style like—Save __________ energy, produce __________ carbon.

________ by what the teacher said, tears came to his eyes.

Mo Yan, _______penname means “Don’t speak”, won the2012 Nobel Prize in literature.