Howlongdidittakeyoutorealizehewasdishonest? —I__________fromthestart.

China’s GDP grew by 7.1 percent in the first half of this year, _______ proved its proactive macro-economic policies were effective

Why are the two students standing at the gate of the teachers’office?—They________to each other in class and________.[ ]

Will you please show me the way to the only tallbuilding ___stands near the post office?

（题文）______ expense, we must take every measure to save the old man’s life.