il 14, 2010, many people dressed in black with whiteflowers ______ their chests observed three minutes of silence in memory of thevictims in Yushu Earthquake

If you _____the book, you ____ buy it right now, I think.

I was doing the same job ________, and Ireally feel exhausted.

A has a quarter of the leading 200 in the latest ranking of the world universities, _________ 30 of the universities are in the UK．

Lisa in the kitchen when you called her at 5 o’clock in the afternoon.