问题

Looking for information on line today is very easy ; the _____________is how to tell whether the information you are getting is useful or not.
A:challenge
B:ability
C:knowledge
D:competition
B:ability
C:knowledge
D:competition
正确答案是:
同类题型
He really can’t understand _________ he said was wrong.
33. I can’t go to bed with an mind until I know she’s safe.
Just an hour ago he was telling me on the phone that he ________ home right after the work
Susan_____while the rest of the family were talking happily in the car.
There was a lot of fun at yesterday’s party. You _____ come, but why didn’t you? [ ]