--- is it from your home to the museum? --- About six kilometers.
There are lots of _____that students have to follow in school.
Fresh food is good for you . But you have to _______it first because sometimes it is a little dirty.
There will be less pollution ___more people use public transportation .
Our teacher was very happy because _____failed the examination.
Daniel, ___ play with the mobile phone while you're walking in the street.