25Mr Duncan raised an unnecessary question__________-he then failed to find an answer

time I saw the angry expression on his face, I ______ exactly what I was having to face. But not for a moment ______ I should quit.

I’m not sure when the 6thnational population census(人口普查)completed—_______ November, 2010.

Our English teacher _________ to Hong Kong twice.

Could you please get me some________? I’m hungry.