If it ________ , I’ll go to the zoo.

lcohol and drugs _______ out of their life, the post-1990s young people now tend to develop healthier hobbies.

Do you know sound travels very fast—-Yes. But light travels _______ sound.

Don’t cut your hair. I like it ____ it is.

Ann is in hospital- Oh, really? I _______ knowI _______ go and visit her