We wanted to get home before dark, but it didn’t quite _________ as planned.
The visiting professor gave us some advice,________ of great help to our English learning.
Nine in ten high school students say there are significant differences in their attitude toward chatting on line, compared with _________ of their parents.
Do you think that bridge ____ 2,000 meters long? It doesn’t seem ____ long.
We now live in ____ is called the Information Age.
One hundred percent _______ to your studies, though it can be lonely and no fun at all, will leave precious marks on your youth.