__________ it is true that a student`s most important goal is to do well in his or her studies,it doesn`t need to be the only goal.
He pretended _______ a book when his mother entered the room.
The production of the factory has grown to _____ in 1999.
What troubled the teacher was that no one present made an answer when asked who had broken the glasses, so he didn’t know who _____________.
____ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
I told her we weren’t going to be friends any more because she couldn’t ________ .