I have been living in the United States for twenty years, but seldom __________ so lonely as now.
When we were young, every evening my brother and I ______ stay at home waiting for my mother?
—Are you satisfied with what he did?—No. It couldn’t have been _____.
This year __________ to be another good one for harvests.
Perhaps it is true that nobody in the world knows exactly how the earth __________.
—Why don’t we choose that road to save time?—The bridge to it __________.