People often have a strange feeling when _______ the past life, thinking of those they leave behind.

made a commitment to the world in the Copenhagen Summit that by 2020, the carbon-intensity of its economy ______ fall 40% to 45%.

208. Last week, I was ill for some days and I’m determined to___________the lost time.

e only twenty minutes left, so please get to the point and don’t say anything that isn’t to out problem.

In the exam , the you are, themistakes you’ll make