My dad fell off the ladder a week ago and ________ in bed ever since.
Snooker superstar Ding Junhui owes his great success to many people, his father _______.
He’s one of those early birds. It’s __________ of him to get up early.
I haven't seen ________ Mary since I came here.
Students in Senior 3 are under _____ great stress, because no one will take ____ risk of failng in the college entrance examinations.
The new survey shows that the number of students ______ computer games has been increasing in recent years.