.It rained a lot during their journey, so they________have had a good time.A can’t B must C shouldn’t D might
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.
The Professor considers ____ no good _____ without understanding.