You should let your children play _________ you can see them.
On Christmas Eve, we put up some balloons to _______ the festival atmosphere.
— Linda, can you give me some tips on doing this project?— Sorry, but I’m not the person to ______ how the job should be done.
— Mum, would you please buy me an ipad?— If you can help do the dishes the whole vacation, you ______ have one as a reward.
— What made Tom scolded by the teacher? — ________.
Global warming has become a serious problem, ______ we must find solutions.