"Most schools in Singapore don't allow the sale of sweets, chocolate, or soft drinks. In fact, overweight kids are required to attend an extra PE session" Based on the passage, it is most likely that Singapore doesn't allow sweets. chocolate, or soft drinks because they cause kids to become overweight.
To show emphasis, the helping verb that would be used to fill the blank in the sentence would be do. I do think I have mastered french pronunciation. Hope this helped :D