“‘You will walk over the earth, and shall never have a home. You have done a very evil thing.’ God said to Cain.” What does the underlined word mean?

It’s not good to use our computers ____ computer games. [ ]

Can you join the ________ club?-Yes. I can swim very ___________.

His friends go to Beidaihe by train vacation every year.[ ]

No one was sure exactly__________ he wanted