He is ill. I don’t know _______ he will come to school.

The baby’s room can be _____to a study room when he grows up and goes to school. [ ]

The black horse is ______ of the pair.

We students can collect food and old clothes for the homeless people， and the teachers can ________learning skills for the poor children.

I wanted to go to Greece,and my wife wanted to go to Spain,so we ________ on Italy.[ ]