—_______ is the meeting room, Mrs. Smith? —It’s about 20 meters long and 10 meters wide.
—What a nice bicycle! How long have you _____ it ?—For a week.
—In the old days, most teenagers had to work for the landlord (地主) in the field to help _____ their families, because their families couldn’t _____ education for them.—What a pity!
In our class _____ of the students _____ girls.
—Which country has the_____population in the world?—China.
—David has made great progress recently.—_____, and _____.