—Learning to love is like learning to walk.
—Yes, ________ we step out bravely, we can find it easy.
although
when
unless
---Do you know______ she will be in three years? ---Maybe she will be a doctor.
I felt______ when I heard the______ news.
It is______ that we can go out to play in the park.
She is new here, so she has _______ friends at school.
Our teacher often keeps us ______ classroom every day, so we must keep our classroom_______.