Uncle Wang didn’t stop to have lunch __he finished mending the TV set.
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.
--Do you have any plans for this summer vacation?--I'm not sure. I ___ take a trip to Taiwan.