—What’s the area and population of the US?—The US is about the same size as China, but its population is five times ______.A. smaller B as little. C. as few D. bigger.
--Shall we go to visit Uncle Lee this weekend? --_________. I wonder whether I will be free that day.
No one is allowed ______ in the classroom.
The rice made _____ possible to produce one-third more of the crop in the same field.
I regret ______ you that you will miss your flight if you don’t hurry up. You have only twenty minutes to go.
. ______ hard. You are sure to succeed!