He is a football fan, so he is keen ________ football matches all day.
Jenny was looking for a seat when, luckily, a man __________ and left.
A quantity of new books written by Liu Yong,a famous writer in Taiwan,are __________ in a month.
She __________ an old friend of hers yesterday while she was shopping at the department store.
—My son has won the singing competition. —__________!
The book __________ ten units, two revisions