I ate sandwich while I was waiting for 20:08 train. (2008陕西卷)
— What are you going to do this weekend? — I don’t know. I ______ visit a friend.
I fell behind in my studies because I went through about four years of being ______ to online games.
— Harry is too thin for his age. — So he is, but ______ he is very healthy.
The man making _____ living by cheating the public ended up in ______ prison.
Every evening after dinner, if not _____ from work, I’ll spend some time walking my dog.