The population in Japan ________ not very large. But it is reported that about twenty-five percent of the population ________ old people.

In order to finish the research, the professor always _______, for every day the light in hisroom didn’t go out until 4 a.m.

Jack described his father，who ________ a brave boy many years ago，as a strong－willed man.

_ to Michelle and having twobeautiful girls in my house never allows me to look down upon women,” saidObama

Madonna ____a straight A student,but it was dancing that she was really crazy about.