_______ that caused him to serve dinner an hour later than usual.
A. It was we being late B. It was our being late
C. It was we were too late D. It was because we were late
China _______ a sharp increase in the number of aged people over the past decade.
A. sees B. saw C. has seen D. will see
Mr. Frank asked me a question _______ I could go with him to _______ he called the Treasure House the next week.
A. that; which B. whether; that C. whether; what D. that; where
—The terrible accident is under investigation.
—Actually, quicker action ______ those workers trapped in the mine.
A. might have saved B. must have saved
C. should have saved D. could have saved
— Why didn’t you try to finish the composition?
— I tried to , but I could, the bell rang announcing the end of the examination time.
A. until B. when C. before D. after
—I don’t have any change with me. Will you pay the bill for me?
—______.
A. That’s fine B. Nothing serious
C. No problem D. Never mind
