The two boys were fighting each other, and it was hard for the old man to __________ them.
Medicine should be placed ____children’s reach to make sure of safety.
—I finished all my work today. —If____, you can help others with their work.
—Remember the first time we met? —Sure.You ____in the supermarket.
I would rather you ____with us yesterday, but you left.
There has been a(n)____of sadness in the small town since a boy was drowned in the river.