__________ the time the firemen arrived, the building had been burnt to pieces.
See the flags on top of the building? That was _______ we did this morning.(2006年全国I高考题)
—It’s thirty years since we last met. —But I still remember the story, believe it or not, _______ we got lost on a rainy night.(2006年四川省高考题)
_______ makes this shop different is that it offers more personal services. (2006年辽宁省高考题)
—Can we get everything ready by the weekend?—It all depends on _______ we can get Mr. Green’s cooperation. (2006年如东中学模拟题)
When you are reading, make a note of _______ you think is of great importance.(2006年东北八校联考题)